ORIGINAL_ARTICLE
Experimental Study of Neutron Emission Characteristics in SBUPF1 Plasma Focus Device
In this work, neutron production of SBUPF1 (a 2.5 kJ Mather type plasma focus device) at various pressures of deuterium and two different anode lengths (12 cm, 18 cm) were studied. Three silver activation counters were used at three different angels (0º, 45º and 90º) in order to determine the angular distribution of neutrons. The neutron and hard x-ray pulses were registered by a ø5"×5" plastic scintillator. These pulses were further used to determine the average energy of the detected neutrons. Experiments showed that for the 18cm anode at the optimum gas pressure, the neutron generation has decreased while the neutron yield at this pressure has increased. Under these conditions, the optimum pressure is 6 mbar, the neutron yield at the optimum pressure is about 6.4×107 per pulse, and the average energy of neutrons is 2.24 MeV.
https://jonsat.nstri.ir/article_458_793b53fbed8e6f300b4cd11750827cb2.pdf
2010-05-22
1
8
Plasma Focus
Fusion
Neutron
Optimum Pressure
Activation Counter
B
Shirani
b.shirani@ast.ui.ac.ir
1
گروه کاربرد پرتوها، دانشکده مهندسی هستهای، دانشگاه شهید بهشتی، صندوق پستی: 1983963113، تهران-ایران
AUTHOR
F
Abbasi Davani
fabbasi@sbu.ac.ir
2
گروه کاربرد پرتوها، دانشکده مهندسی هستهای، دانشگاه شهید بهشتی، صندوق پستی: 1983963113، تهران-ایران
LEAD_AUTHOR
1. J.W. Mather, Phys. Fluids, V. 8(2), 366 (1965).
1
2. N. Filippov, T. Filipova, V. Vinogradov, N. Fusion Suppl. Pt, 2, 577 (1962).
2
3. H.J. Woo, K.S. Chung, M.J. Lee, Plasma Phys. Control. Fusion, 46, 1095-1104 (2004).
3
4. V.V. Vikhrev, Sov. J. Plasma Phys, 12-262 (1986).
4
5. M.J. Bernstein, Phys. Rev. Lett, 24-724 (1970).
5
6. J.H. Lee, L.P. Shomo, M.D. Willams, H. Hermansdorfer, Phys. Fluids, 14-2217 (1971).
6
7. M. Zakaullah, I. Akhtar, G. Murtaza, A. Waheed, Phys. Plasmas, 6-3188 (1999).
7
8. M. Zakaullah, I. Akhtar, A. Waheed, K. Alamgir, A.Z. Shah, G. Murtaza, Plasma Sources Sci. Technol, 7-206 (1998).
8
9. M. Zakaullah, G. Murtaza, I. Ahmad, F.N. Beg, M.M. Beg, M. Shabbir, Plasma Sources Sci. Technol, 4-117 (1995).
9
10. R. Antanasijevic, Z. Maric, R. Banjanac, A. Dragic, J. Stanojevic, D. Aoraevic, D. Joksimovic, V. Udovicic, Vokovic, J. Radiat. Meas, 31-443 (1999).
10
11. F. Castillo, J.J.E. Herrera, J. Rangel, M. Milanese, R. Moroso, J. Pouzo, J.I. Golzarri, G. Espinosa, Plasma Phys. Control. Fusion, 45- 289 (2003).
11
12. A.C. Pătran “Electron and medium energy X-ray emission from a dense plasma focus,” PHD Thesis National Institute of Education, Nanyang Technological University in fulfilment of the requirement for the degree of Doctor of Philosophy (2002).
12
13. A. Gentilini, J.P. Rager, K. Steinmetz, M. Tacchi, D. Antonini, B. Arcipiani, P. Moioli, E. Pedretti, R. Scafe, Nucl. Instr. and Meth. 172, 541-552 (1980).
13
14. S. Lee and A. Serban, IEEE Trans. on Plasma Phys, 24(3), 1101 (1996).
14
15. Shan Bing “Comparative study of dynamics and X-ray mission of several plasma focus devices,” PHD Thesis Physics Division, School of Science Nanyang Technological University (2000).
15
16. J.W. Mather, 4th Conf. On Plasma Physics and Nuclear Fusion, Wisconsin (1971b).
16
ORIGINAL_ARTICLE
Heavy Metal Removal from Synthetics Wastes by Natural and
Acid-Activated Bentonites
This paper examines heavy metals removal from synthetics wastes by the use of natural and sulfuric acid-activated bentonite so that a cheap adsorbent can be attained for removing these metals from the wastes. Bentonite is a 2:1 layer aluminnisilicate whose dominant mineral is montmorillonite which is a nano-structure and nanoporous material. Montmorillonite affects all the properties of bentonite. In the next step, the effect of acid activation on the adsorption of both of lead (Pb) and thallium (Tl) is studied. In this research, after the mineralogical and chemical composition analyses by X-ray diffraction and fluorescence (XRD and XRF) methods, granulometric analysis is carried out on five samples namely, S2-RAW, S3-RAW, ES3-RAW, G1-RAW and GH1-RAW to remove the heavy metals such as Cr, Co, Cu, Fe, Pb, Tl, Ni, and Zn accompanying atomic absorption spectroscopy (AAS). Then, the effect of four factors including concentration, liquid to solid ratio (L/S), time, and activation temperature in acid activation process were studied. This process is done by a mineral acid, sulfuric acid, to promote the adsorbability of lead and thallium in both natural and activated types of ES3-RAW and GH1-RAW. In all case, due to the presence of dominant mineral of nano-montmorillonite and its unique structure, montmorillonite has a higher adsorbability in comparison with that of the other clay minerals.
https://jonsat.nstri.ir/article_460_c739dfdf3965a4d9eb695d4d6e1067fb.pdf
2010-05-22
18
27
Bentonite
Adsorption
Acid-Activation
Heavy Metals
Nanostructured and Nanoporous Montmorillonite
S.H
Jazayeri
1
آزمایشگاه تحقیقاتی صنایع شیمیایی معدنی، دانشکده مهندسی شیمی، دانشگاه علم و صنعت ایران، صندوق پستی: 13114-16846، تهران ـ ایران
AUTHOR
M
Hayati Ashtiani
2
آزمایشگاه تحقیقاتی صنایع شیمیایی معدنی، دانشکده مهندسی شیمی، دانشگاه علم و صنعت ایران، صندوق پستی: 13114-16846، تهران ـ ایران
AUTHOR
S.N
Ashrafizadeh
3
آزمایشگاه تحقیقاتی صنایع شیمیایی معدنی، دانشکده مهندسی شیمی، دانشگاه علم و صنعت ایران، صندوق پستی: 13114-16846، تهران ـ ایران
LEAD_AUTHOR
M
Ghannadi Maragheh
mghanadi@aeoi.org.ir
4
پژوهشکده چرخه سوخت هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 8486-11365، تهران ـ ایران
AUTHOR
A
Nozad Golikand
anozad01@gmail.com
5
پژوهشکده چرخه سوخت هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 8486-11365، تهران ـ ایران
AUTHOR
1. K.A. Carrado, “Introduction: clay structure, surface acidity and catalysis,” in: “Handbook of layered materials” (S.M. Auerbach, K.A. Carrado, P.K. Dutta, Eds), Marcel Dekker, New York, 1 ( 2004).
1
2. T.J. Pinnavaia, Intercalated Clay Catalysts, Science, 220, 365-371 (1983).
2
3. R. Virta, USGS minerals information, US Geological Survey, Mineral Commodity Summary, (January 2002). (ftp:// minerals. usgs. gov/ minerals/ pubs/ commodity/ clays/ 190496. pdf).
3
4. S. Babel and T.A. Kurniawan, “Low cost adsorbents for heavy metals uptake from contaminated water: a review,” Journal of Hazardous Materials, 97, 219-243 (2003).
4
5. R. Virta, USGS minerals information, US Geological Survey, Mineral Commodity Summary, (January 2001). (ftp:// minerals. usgs. gov/ minerals/ pubs/ commodity/ zeolites/ zeomyb00. pdf).
5
6. S.K. Ouki, M. Kavanagh, “Performance of natural zeolites for the treatment of mixed metal-contaminated effluents,” Waste Manage. Res, 15, 383-394 (1997).
6
7. S.M. Jasinski, SGS Minerals Information, US Geological Survey Mineral Commodity Summary 2001, (January 2002). (ftp:// minerals. usgs. gov/ minerals/ pubs/ commodity/ peat/ 510302. pdf).
7
8. S. Babel and T.A. Kurniawan, “Cr (VI) removal from synthetic wastewater using coconut shell charcoal and commercial activated carbon modified with oxidizing agent and/or chitosan,” 54, 951-967 (2004).
8
9. D.C. Sharma, C.F. Forster, “Removal of hexavelent chromium using sphagnum moss peat,” Water Res, 27, 1201-1208 (1993).
9
10. T. Mathialagan, T. Viraraghavan, “Adsorption of cadmium from aqueous solutions by perlite,” J. Hazard. Mater, 94, 291-303 (2002).
10
11. G.L. Rorrer, J.D. Way, “Chitosan beads to remove heavy metal from wastewater,” Dalwoo-ChitoSan (May 2002). (ftp:// dalwoo. com/ chitosan/ rorrer. html).
11
12. C.E. Marshall, “Layer lattices and base-exchange,” Z. Krist, 91, 433-449 (1935).
12
13. K.G. Bhattacharyya, S. Sen Gupta, “Influence of acid activation on adsorption of Ni(II) and Cu(II) on kaolinite and montmorillonite: kinetic and thermodynamic study,” Chemical Engineering Journal, 136, 1-13 (2008).
13
14. K.G. Bhattacharyya, S.S. Gupta, “Adsorption of a few heavy metals on natural and modified kaolinite and montmorillonite: a review,” Advanced Colloid Interface Science, 1-55 (2009).
14
15. R.S. Lamar, “Bentonite Activation,” California Journal of Mines, 49, 297-302 (1951).
15
16. S.J. Gregg, “In surface phenomena in chemistry and biology: Danielli, J, Pankhust, K.G.A; Riddiford, A.C; Pergamon Press; London, 195 (1958).
16
17. F.R.V. Diaz, P.S. Santos, “Studies on the Acid Activation of Brazilian Smectitic Clays,” Quim Nova, 24(3), 345-353 (2001).
17
18. H.Y. Zhu and S. Yamanaka, “Molecular recognition by Na-loaded alumina pillared Clay,” 93, 477–480 (1997).
18
19. S.H. Jazayeri, M. Habibian, M. Ghannadi, M. Hayati-Ashtiani, “Instrumental analyses of zeolitic bentonites,” The 1st Iran International Zeolite Conference (IIZC08), Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran, 29 April-1 May (2008).
19
20. S. Sen Gupta, K.G. Bhattacharyya, “Adsorption of Ni(II) on Clays,” Journal of Colloid and Interface Science, 295, 21-32 (2006).
20
21. K.G. Bhattacharyya, S. Sen Gupta, “Adsorption of Co(II) from aqueous medium on natural and acid-activated Kaolinite and montmorillonite,” Separation Science and Technology, 42, 3391-3418 (2007).
21
22. S. Sen Gupta, K.G. Bhattacharyya, “Interaction of metal ions with clays. I. A Case 367 Study with Pb(II),” Applied Clay Science, 30, 199-206 (2005).
22
23. S. Simsek, U. Ulusoy, O. Ceyhan, “Adsorption of UO22+, Tl+, Pb2+, Ra2+ and Ac3+ onto polyacryloamide-bentonite composite,” Journal of Radioanalytical and Nuclear Chemistry, 256, 315-321(2003).
23
24. E. Alvarez-Ayuso, A. Garcia-Sanchez, “Removal of heavy metals from waste waters by natural and Na-exchanged bentonites,” Clays and Clay Minerals; 51, 475-480 (2003).
24
ORIGINAL_ARTICLE
The Effect of Homogenization Procedure on Properties and Microstructure of High Content Lead Glasses
Radiation shielding lead glasses can be used in any facility, which requires protection from radiation, for example medical centers, industrial and nuclear sites. Usually, for improvement of optical properties and homogeneity control of these glasses, homogenization process in different ways is applied. One of the important methods, which is also industrially practical for other glass systems, named fritting, is the process of melting and quenching of molten materials to form small glass particles. In the current work, the effect of homogenization on the thermal and physical properties of lead glasses is investigated. In this way, a composition of lead glass was selected. Then fritting procedure applied six times for this composition and the effect of fritting on thermal, physical, properties and homogeneity of glass were discussed. Finally, microstructural analyses of glass specimens were carried out. The results showed that the increase of the fritting period has an unwanted influence on different properties of the glass samples and this process can be used in joint with considering the other effective parameters.
https://jonsat.nstri.ir/article_461_46220b11ced26eb533bd24b5f6afbddd.pdf
2010-05-22
28
33
Lead Glass
Homogenization Method
Heat treatment
Physical Properties
Microstructure
Z
Hamnabard
1
پژوهشکده مواد، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 498-31485، کرج ـ ایران
LEAD_AUTHOR
s
Kakooei
2
پژوهشکده مواد، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 498-31485، کرج ـ ایران
AUTHOR
R
Rahimi
rafialirhm71@gmail.com
3
پژوهشکده مواد، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 498-31485، کرج ـ ایران
AUTHOR
1. و. مارقوسیان، ”شیشه: ساختار، خواص و کاربرد،“ دانشگاه علم و صنعت ایران، مرکز انتشارات (1381).
1
2. W.D. Kingery, H.K. Bown, D.R. Uhlmann, “Introduction to ceramics,” John wiley & sons (1976).
2
3. Charles R. Kurkjian, William R. Prindle, “Prespective on the History of Glass Composition,” J. Am. Ceramic. Soc. Vol. 18, Number 4, 795-813 (1998).
3
4.
4
V. Tooley
5
ت ترجمه گروه مترجمین، ”شالوده صنعت شیشه،“ جلد 2، شرکت سهامی شیشه قزوین، صفحه 720-714 (1372).
6
5. European Patent EP1794096, “Method & Apparatus for Homogenizing a glass Melt,” (2006).
7
6. Gwenn Le Saouˆt, Yann Vaills, Yves Luspin, “Effects of thermal history on mechanical properties of (PbO)x(ZnO)(0.62x)(P2O5)0.4 glasses using Brillouin scattering,” Solid State Communications 123, 49–54 (2002).
8
7. C. Levelut, A. Faivre, R. LeParc, B. Champagnon, J.L. Hazemann, L. David, C. Rochas, J.P. Simon, “Influence of thermal aging on density fluctuations in oxide glasses measured by small-angle X-ray scattering,” Journal of Non-Crystalline Solids 307–310, 426–435 (2002).
9
8. R. Le Park, B. Chmpagnon, Ph. Guenot, S. Dubois, “Thermal annealing and density fluctuations in silica glass,” Journal of Non-Crystalline Solids 293–295, 366–369 (2001).
10
9. A. MAROTTA, A. BURI, F. BRANDA, “Nucleation in glass and differential thermal analysis,” Journal of Materials Science, Vol. 16, 341-344 (1981).
11
10. Xiaojie J. Xu, Chandra S. Ray, Delbert E. Day, “Nucleation and Crystallization of Na2O.2CaO.3SiO2 Glass by Differential Thermal Analysis,” J. Am. Ceram. SO, Vol. 74, Number 5, 909-914 (1991).
12
11. R.H. Bryden, W.F. Caley, “Determination of nucleation temperature of a lime Alumino silicate glass-ceramic by differential thermal analysis,” Journal of Materials Science Letter, Vol. 16, 56-58, (1997).
13
12. R. Le Parc, A. Faivre, B. Champagnon b, “Influence of thermal history on the structure and properties of silicate glasses,” C. Levelut, Journal of Non-Crystalline Solids 352, 4495–4499 (2006).
14
13. W.F. DU, K. Kureoka, T. Akai, T. Yazawa, “Study of Al2O3 effect on structural change and phase separation in Na2O-B2O3-SiO2 glass by NMR,” Journal of Materials Science, Vol. 35, 4865-4871 (2000).
15
14. M. L. Pershin, G. P. Lisovskaya, V.E. Manevich, “Modelling the process of homogenization of the chemical composition of glass,” Glass & Ceramics, Vol. 42, Number 8, 348-351 (1985).
16
15. V.V. Golubkov, V.N. Bogdanov, A.Ya. Pakhnin, V.A. Solovyev, E.V. Zhivaeva, V.O. Kabanov, O.V. Yanush, S.V. Nemilov, A. Kisliuk, M. Soltwisch, D. Quitmann, “Microinhomogenities of glasses of the system PbO-SiO2,” J. Chem. Phys, Vol. 110, Number.10, 4897-4906 (1999).
17
ORIGINAL_ARTICLE
Potential Map Ping and Regional Geochemical Exploration of Uranium by Using Tracers in Esfordi 1:100,000 Sheet
According to Atomic Energy Organization of Iran (AEOI) Uranium exploration program in Central Iran, Esfordi 1:100,000 sheet which is located in Yazd province, between Bafq & Behabad cities was prospected. The analysis result of the stream sediment samples which were collected by the Geography Society of Iran (GSI) have been used for radioactive resources of this area. Due to lacking of uranium, thorium and Rare Earth Elements (REE) analysis data, the uranium tracers have been used. The data processing, i.e. normalization, univariate and multivariate analysis were studied and ultimately, anomalies maps were prepared. Three uranium potential areas were introduced. These areas include marl and conglomerate sequence in North-west of region, south of Zarigan granite and sandstone sequence with aplites between Esfordi mine and Kooshk mine. Thus, Esfordi sheet is important as a sediment hosted uranium deposit.
https://jonsat.nstri.ir/article_462_f4800af56104216b5d1547ea11284774.pdf
2010-05-22
34
41
Radioactive Elements
Stream Sediment
Tracer Elements
Esfordi
Y
Ghanbari
1
شرکت اکتشاف و تأمین مواد اولیه صنعت هستهای (امکا)، سازمان انرژی اتمی ایران، صندوق پستی: 1339-14155، تهران-ایران
LEAD_AUTHOR
S
Saen
2
دانشکده مهندسی معدن و متالورژی، دانشگاه صنعتی امیرکبیر، صندوق پستی: 15914، تهران-ایران
AUTHOR
A
memar
3
پژوهشکده چرخه سوخت هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 8486-11365، تهران ـ ایران
AUTHOR
1. M. Tauchid, D.H. Underhill, “Uranium deposits of the world,” Proceeding of Exploration 97, 177- 180 (1997).
1
2. F.J. Dahlkamp, “Uranium ore deposits,” Springer & Exploration Techniques. V. 460, 23-24 (1993).
2
3. V.G. Melkov, “Methods of prospecting for uranium deposits,” Journal of Nuclear Energy. V. 3, 158-167 (1956).
3
4. ب. سامانی، ”زمینشناسی اورانیم و منابع آن،“ پایگاه ملی دادههای علوم زمین کشور (1382).
4
5. ا. مشکانی، ”گزارش اکتشافات ژئوشیمیایی در برگه 1:100000 اسفوردی،“ سازمان زمینشناسی و اکتشافات معدنی کشور (1382).
5
6. خ. جمشیدی، ع. افشاریانزاده، م. سهیلی، م. مهدوی، ”شرح نقشه زمینشناسی برگه 1:100،000 اسفوردی،“ سازمان زمینشناسی و اکتشافات معدنی کشور، چاپ افست تهران (1370).
6
7. L.S. Labaschange, R. Holdsworth, T. Stone, “Regional stream sediment geochemical survey of south africa,” Journal of Geochemical Exploration. V. 47, 283-296 (1993).
7
8. ع.ا. حسنیپاک، م. شرفالدین، ”تحلیل دادههای اکتشافی،“ تهران، مؤسسه چاپ و انتشارات دانشگاه تهران (1380).
8
9. س. پرند، ”روشهای اکتشاف ژئوشیمیایی ذخایر معدنی،“ تهران، انتشارات سازمان زمینشناسی و اکتشافات معدنی کشور (1375).
9
10. A. Zielinski, Robert, “Tuffaceous sediments as source roks for uranium: a case study of the white river formation. Wyoming,” Journal of Geochemical Exploration. V. 18, 285-306 (1983).
10
11. A. Sadeghi, Steele, F. Kenneth, “Use of stream sediment elemental enrichment factors in geochemical exploration for carbonatite & uranium, arkansas, U.S.A.,” Journal of Geochemical Exploration. V. 32, 279-286 (1989).
11
12. ا. حبیبنیا، ”مطالعه زمینشناسی اقتصادی و ارزیابی پتانسیل اکتشافی اورانیم و سایر عناصر پرتوزا در ورقه 1:50000 مغانجق با استفاده از دادههای ژئوشیمی رسوبات آبراههای،“ پایاننامه کارشناسی ارشد، دانشکده مهندسی معدن و متالورژی، دانشگاه صنعتی امیرکبیر (1385).
12
13. G.J.S.ed. Govet, “Hand book of exploration geochemistry,” Amesterdam: Elsevier (1994).
13
14. L. James, Jr. Jerden, “Geochemical coupling of uranium & phosphorous in soils overlying an unmined uranium deposit: coles hill, virjinia,” Journal of Geochemical Exploration. V. 91, 56-70 (2006).
14
15. International Atomic Energy Agency (IAEA), “Critical Geochemical Exploration for Uranium,” IAEA-TECDOC Technical Reports Series No. 284, IAEA, Vienna, Austria (1998).
15
16. W. Rose, Arthur; J. Wright, Robert, “Geochemical exploration models for sedimentary uranium deposits,” Journal of Geochemical Exploration. V. 13, 153-179 (1980).
16
ORIGINAL_ARTICLE
Adsorption Properties of Amidoxime Resins for Separation of Uranium (VI) from Aqueous Solutions
In this study, the acrylonitrile (AN)-divinylbenzene (DVB)-methylacrylate (MA) resin was synthesized via suspension polymerization in the presence of toluene as a diluent, and benzoylperoxide (BPO) as an initiator. The effect of MA, toluene and alkaline treatment on the exchange capacity of the resin were investigated. The results showed that the anion exchange capacity decreases with an increase of the amount of MA, while alkaline treatment has no significant effect. Also, the cation exchange capacity increases with an increase in the amount of hydrophilic agent and reaches a maximum. The sorption equilibrium was achieved relatively fast within 40 minutes. The adsorption of uranium was directly depends on the pH value. Finally, the alkaline treatment enhances the potential for the much faster adsorption and the chelating resin provides a more favourable pore structure for the rapid diffusion of the ions.
https://jonsat.nstri.ir/article_463_a628f6577695274c71a12776ab353479.pdf
2010-05-22
42
47
Amidoxime Resin
Adsorption
Ion Exchange Capacity
Hydrophilic Agent
Alkaline Treatment
A
Nilchi
1
پژوهشکده چرخه سوخت هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 8486-11365، تهران ـ ایران
LEAD_AUTHOR
R
Rafiee
2
گروه پلیمر، دانشکده مهندسی شیمی، دانشگاه صنعتی سهند، صندوق پستی: 1996-51335، تبریز- ایران
AUTHOR
A.A
Babalou
3
گروه پلیمر، دانشکده مهندسی شیمی، دانشگاه صنعتی سهند، صندوق پستی: 1996-51335، تبریز- ایران
AUTHOR
S
Rasouli Garmarodi
4
پژوهشکده چرخه سوخت هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 8486-11365، تهران ـ ایران
AUTHOR
A. Nilchi, A. Khanchi, M. Ghanadi Maragheh, “The importance of cerium substituted phosphates as cation exchanger-some unique properties and related application potentials,” Talanta, 56, 383-393 (2002).
1
A. Nilchi, M. Ghanadi Maragheh, A. Khanchi, M.A. Farajzadeh, A.A. Aghaei, “Synthesis and Ion exchange properties of crystalline titanium and zirconium phosphates,” J. Radioanal. Nucl. Chem, 261, No. 2, 393-400 (2004).
2
A. Nilchi, B. Maalek, A. Khanchi, M. Ghanadi Maragheh, A. Bagheri, “Cerium (IV) molybdate cation exchanger: synthesis, properties and ion separation capabilities,” Rad. Phys. Chem, 73, 301-308 (2002).
3
P.D. Verweij, S. Sital, M.J. Haanepen, W.L. Driessen, J. Reedijk, “Metal binding affinity of imidazole ligands immobilized on poly (glycidyl methacrylateco-ethylene dimethacrylate) and on silica,” J. Eur. Polym. J. 29, 1603-1614 (1993).
4
A. Zhang, G. Uchiyama, T. Asakura, “pH effect on the uranium adsorption from seawater by a macroporous fibrous polymeric material containing amidoxime chelating functional group,” React. Funct. Polym, 63, 143-153 (2005).
5
M. Nogami, S.Y. Kim, N. Asanuma, Y. Ikeda, “Adsorption behavior of amidoxime resin for separating actinide elements from aqueous carbonate solutions,” J. Alloy. Comp, 374, 269-271 (2004).
6
J. Korkisch, I. Steffan, “Determination of uranium and Thorium after anion exchange separation,” Analy. Chimica. Acta, 90, 151-158 (1977).
7
H. Chao, N. Suzuki, “Adsorption behavior of Scandium, Yttrium, Cerium and Uranium from xylenol orange solutions onto anion exchange resins,” Analy. Chimica. Acta, 125, 139-147 (1981).
8
H. Egawa, M. Nakayama, T. Nonaka, H. Yamamoto, “Recovery of uranium from sea water V. preparation and properties of the macroreticular chelating resins containing amidoxime and other functional groups,” J. Appl. Polym. Sci, 34, 1617-1625 (1987).
9
T. Hirotsu,“Adsorption of uranium on cross-linked amidoxime polymer from seawater,” Ind. Eng. Chem. Res, 26, 1970-1977 (1987).
10
T. Hirotsu, “Adsorption of Uranium on Amidoxime Type Resin,” J. Appl. polym. sci, 36, 1741-1752 (1988).
11
M.B. Colella, S. Siggia, R.M. Barnes, “Synthesis and characterization of a poly (acrylamidoxime) metal chelating resin,” Anal. Chem, 52, 967-972 (1980).
12
A. Zhang, T. Asakura, G. Uchiyama, “The adsorption mechanism of uranium(VI) from seawater on a macroporous fibrous polymeric adsorbent containing amidoxime chelating functional group,” React. Funct. Polym, 57, 67-76 (2003).
13
ORIGINAL_ARTICLE
Pathological and Molecular Identification of Fusarium Solani F.Sp. Phaseoli
Isolates and Determination of Suitable Gamma ray Dose Rate for Mutation Induction
During 1384-1385, the plants showing root and crown rot were collected from 48 bean fields in the Khuzestan and Markazi provinces. Twenty isolates were identified as Fusarium solani based on morphological characteristics. The pathogenicity tests confirmed four isolates as Fusarium solani f.sp. phaseoli. By using specific primers for this specific form, three isolates showed concordant results with pathogenicity tests. As a result three isolates morphologically and molecularly identified as F.solani f.sp. phaseoli. In order to induce mutation, conidia scraped from F.solani f.sp. phaseoli cultures, were counted, diluted and then plated on water agar. The plates containing conidia were irradiated in a 60Co-gamma cell (with activity of 2500 curi and 0.38 gray per second dose rates) in doses 0, 60, 90, 120, 150, 180 Gy. After 18 hours, the percentage germination of spores were scored. The comparison of percentage germination and vegetative growth in different dose rates showed that spore mutagenesis can be expected in 120-180 Gy.
https://jonsat.nstri.ir/article_464_4f6895d9fd5fd49404e756c68f33e22d.pdf
2010-05-22
48
51
Gamma Ray
Mutation Induction
Fusarium Solani F.Sp.Phaseoli
Specific Primer
H
Ahari Mostafavi
1
- گروه بیماریشناسی گیاهی، دانشکده کشاورزی، دانشگاه تربیت مدرس، صندوق پستی: 336-14115، تهران ـ ایران 2- پژوهشکده تحقیقات کشاورزی، پزشکی و صنعتی، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 498-31485، کرج- ایران
LEAD_AUTHOR
N
Safie
2
گروه بیماریشناسی گیاهی، دانشکده کشاورزی، دانشگاه تربیت مدرس، صندوق پستی: 336-14115، تهران ـ ایران
AUTHOR
H
Fathollahi
3
پژوهشکده تحقیقات کشاورزی، پزشکی و صنعتی، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 498-31485، کرج- ایران
AUTHOR
M
Babaie
4
پژوهشکده تحقیقات کشاورزی، پزشکی و صنعتی، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 498-31485، کرج- ایران
AUTHOR
H.R
Dorri
5
مرکز تحقیقات کشاورزی و منابع طبیعی استان مرکزی، صندوق پستی: 889، اراک ـ ایران
AUTHOR
M.R
Lak
6
مرکز تحقیقات کشاورزی و منابع طبیعی استان مرکزی، صندوق پستی: 889، اراک ـ ایران
AUTHOR
1. J.M. Jurrian, R. Wit, S.T. Christa, D.G. Francis, A.H. Michel, J.C. Ben, “Loss of avirulence and reduced pathogenecity of a gamma-irradiated mutant of fusarium oxysporum f.sp.lycopersici,” Phytopathology, 89, 1131-1137 (1999).
1
2. K.K. Lakshmesha, N. Lakshmidevi, S. Mallikarjuna, “Changes in pectinase and cellulase activity of colletotrichum capsici mutants and their effect on antheracnose disease on capsicum fruit,” Archives of Phytopathology and Plant Protection, 38: 267-279 (2005).
2
3. بینام، ”آمار محصولات کشاورزی سالیانه و دایمی استان مرکزی سال زراعی 81-1380،“ سازمان جهاد کشاورزی استان مرکزی، 20 (1382).
3
4. P.E. Nelson, T.A. Toussoun, W.F.O. Marasas, “Fusarium species: an illustrated manual for identification,” Pensylvania State University Press. University Park, 193 (1983).
4
5. Westerland, F.U. J.R. Campbell, R.N. Limble, K.A. “Fungal root rots and wilt of chickpea in California,” Phytopathology, 64: 432-436 (1974).
5
6. W. McFadden, R. Hall, L. Philips, “Relation of initial inoculum density to severity of fusarium root rot of white bean in commercial fields,” Can. J. Plant Pathol. 11: 122-126 (1989).
6
7.
7
Fusarium graminearum
8
ن. صفایی، ع. علیزاده، ع. سعیدی، ح. رحیمیان، گرهارد آدام، ”تشخیص مولکولی و بررسی تنوع ژنتیکی جمعیتهای ایرانی عامل بلایت سنبله گندم،“ مجله بیماریهای گیاهی، 41، 189-171 (1384).
9
8. M. Filion, M. St-Arnaud, S.H. Jabaji-Hare, “Quantification of fusarium solani f.sp. phaseoli in mycorrhizal bean plants and surrounding mycorrhizosphere soil using Real Time polymerase chain reaction and direct isolations on selective media,” The American Phytopathological society, V.93, 2, 229-235 (2003).
10
9. International Atomic Energy, Vienna, “Manual on mutation breeding,” (1995).
11
ORIGINAL_ARTICLE
The Effects of Different Uranium Concentrations on Soil Microbial Populations and Enzymatic Activities
Uranium is an ubiquitous constituent of natural environment with an average concentration of 4mg/kg in earth crust. However, in local areas it may exceed the normal concentration due to human activities resulting in radionuclide contamination in groundwater and surface soil. The effect of six levels of uranium concentration (0, 50, 100, 250, 500 and 1000mg kg-1) on soil phosphatase activities and microbial populations were studied in a completely randomized design as a factorial experiment with three replications. The results showed a significant decrease in phosphatase activity. The result of the experiment suggests that soil microbial populations (bacteria, funji and actinomysetes) decrease by increasing the uranium levels in the soil. Therefore, assessment of soil enzymatic activities and microbial populations can be helpful as a useful index for a better management of uranium and radioactive contaminated soils.
https://jonsat.nstri.ir/article_465_02716fb7d056ba1f95c00ccad7b15dc4.pdf
2010-05-22
52
57
Uranium
Soil Microbial Populations
Enzime Phosphatase Activity
S
Bagherifam
1
گروه مهندسی علوم خاک، دانشکده کشاورزی، دانشگاه فردوسی مشهد، صندوق پستی: 1163، مشهد ـ ایران
LEAD_AUTHOR
A
Lakziyan
2
گروه مهندسی علوم خاک، دانشکده کشاورزی، دانشگاه فردوسی مشهد، صندوق پستی: 1163، مشهد ـ ایران
AUTHOR
S.J
Ahmadi
3
پژوهشکده چرخه سوخت هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 8486-11365، تهران ـ ایران
AUTHOR
A
Fotovvat
4
گروه مهندسی علوم خاک، دانشکده کشاورزی، دانشگاه فردوسی مشهد، صندوق پستی: 1163، مشهد ـ ایران
AUTHOR
M.F
Rahimi
5
گروه مهندسی علوم خاک، دانشکده کشاورزی، دانشگاه فردوسی مشهد، صندوق پستی: 1163، مشهد ـ ایران
AUTHOR
1. J. Entray, N. Vance, M. Hamilton, M. Zabowask, D. Zabowask, L. Watrud, D. Adrino, “Phytoremediation of soil contaminated with low concentrations of radionuclides,” Water Air and Soil Pollution. 88, 167-172 (1996).
1
2. C.M.D. lamas, “Factors affecting the uranium availability in soils,” PhD Thesis. Fall Agricultural Research (2005).
2
3. R.P. Dick, “Soil enzyme activities as indicator of soil quality,” Spec. Pub, 35, Madison. WI, 107-124 (1994).
3
4. E. Hofmann, A. Seegrer, “Soil enzymes as measure of biological activity,” Soil Biology and Biochemistry, 321, 97-98 (1950).
4
5. M.A. Tabatabaei, J.M. Bremner, “Use of p-nitrophenylphosphate for assaying of soil phosphatase activity,” Soil biology and biochemistry, 1, 301-307 (1969).
5
6. F.J. Stevenson, “Cycles of soil carbon, nitrogen, phosphorus, sulfure, micronutrients:wiley inter science publication,” John wiley and sons: New York (1986).
6
7. S.P. Deng, M.A. Tabatabaei, “Cellulase activity of soils; effects of trace elements,” Soil Biology and Biochemistry, 27, 977-979 (1995).
7
8. A.K. Bandick, R.P. Dick, “Field management effects on soil enzyme activities on soil biological characteristics,” Agriculture, Ecosystem and Environment, 66, 241-249 (1999).
8
9. R.Q. Maguire, J.T. Sims, f.J. Coale, “Phosphorus solobility in biosolid-amended farm soils in the mid-atlantic region of the usa,” Journal of environmental quality, 29, 1225-1233 (2000).
9
10. S.C. Sheppard, W.G. Evnden, A.G. Anderson, “Multiple assays of uranium toxicity in soil,” Environmental Toxicology and Water quality, 7, 275-294 (1992).
10
11. B. Julius, “Practical organic chemistry,” Kjeldal method to measure nitrogen (1910).
11
12. L. Metzger, “The effect of sewage sludge on soil structure,” Soil Science Society of America Jurnal, 51, 346-351 (1987).
12
13. A. Klute, “Method of soil analysis part 1: Physical and Mineralogical methods, ASA,” Soil Science Society of America Madison. Wisconsin, USA (1986).
13
14. A. Walkli, I.A. black, “An examination of the degtareff method for determinating soil organic matter, and a proposed modification of the chromic acid titration method,” Soil Science, 37: 29-38 (1934).
14
15. K. Alef, P. Nannipiery, “Methods in applied soil microbiology and biochemistry,” Academic Press. 124-200 (1995).
15
ORIGINAL_ARTICLE
Production and Evaluation of 186Re Radionuclide in the Tehran Research Reactor for Therapeutic Applications
In this work, the production of 186Re by 185Re (n,γ) 186Re reaction in the Tehran Research Reactor (T.R.R) is investigated. The activity of 186Re was measured after a cooling time of 4 days, using a liquid beta scintillation system and a dose calibrator. Also, activity of the samples were calculated using fluxes determined by Monte Carlo simulation of the reactor core. The calculated and measured values for the activity of irradiated samples are comparable in the range of ±18% and the irradiation correction factors are 1.135 and 0.820 for natural rhenium (thermal neutron flux of 6.5×1013 cm-2 s-1)and rhenium samples with high the isotope abundance of 185Re (thermal neutron flux of 1.18×1013 cm-2 s-1), respectively. The results have shown that 186Re samples (in the form of perrhenate) can be achieved with 96.5% radiochemical purity and 99% radionuclidic purity. The products with the high specific activity of about 300mCi/mg for therapeutical aplications can be achieved in T.R.R. using rhenium sample target with a high abundance from rhenium-185 target; and for the medium with the mean specific activity, natural rhenium can be used.
https://jonsat.nstri.ir/article_466_836c4cb5dd0263e1891569dce4660182.pdf
2010-05-22
58
62
Sh
Sheibani
ssheibani@aeoi.org.ir
1
پژوهشکده علوم هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 3486-11365، تهران ـ ایران
LEAD_AUTHOR
H
Pourbeigi
hpourbeigi@aeoi.org.ir
2
پژوهشکده علوم هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 3486-11365، تهران ـ ایران
AUTHOR
Y.H
Tavakoli
3
پژوهشکده علوم هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 3486-11365، تهران ـ ایران
AUTHOR
M
Keyvani
4
پژوهشکده تحقیقات و توسعه راکتورها و شتابدهندهها، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 1339-14155، تهران ـ ایران
AUTHOR
1. J. Koutsikos and A. Leondi, “Treatment efficacy of combined biphosphonates and 186Re-HEDP treatment in cancer patients with bone metastases,” Eur. J. Nucl. Mol. Imaging 35(4), 756-765 (2008).
1
2. R. Klett, U. Lange, H. Haas,M. Voth,J. Pinkert, “Radiosynoviorthesis of medium-sized joints with rhenium-186-sulphide colloid: a review of the literature,” Rheumatology, 46(10), 1531-1537 (2007).
2
3. H. Breitz, P.I. Weiden, J.L. Vanderheyden, J.W. Appelbaum, “Clinical experience with rhenium-186-lebeled monoclonal antibodies for radioimunotherapy: results of phase I trials,” J. Nucl. Med. 33, 1099-1112 (1992).
3
4. B.M. Coursey, J. Cessna, E. Garcia-Tornado, “The standardization and decay scheme of rhenium-186,” Appl. Radiat. Isot. 42, 865-869 (1991).
4
5. G.J. Ehrhardt, M.E. Blumer, F.M. Su, “Experience with aluminum perrhenate targets for reactor production of high specific activity 186Re,” Appl. Radiat. Isot, 48, 1-4 (1997).
5
6. M. Neves, A. Kling, R.M. Lambrecht, “Radionuclide production for therapeutic radiopharmaceuticals,” Appl. Radiat. Isot. 57, 657-604 (2002).
6
7. International Atomic Energy Agency, “Manual for reactor produced radioisotopes,” IAEA-TECDOC 1340 (2003).
7
8. J.F. Briesmeister, “MCNP-A general Monte Carlo N-particle transport Code, Version 4C, Los Alamos National Laboratory Report LA12625.
8
9. Atomic Energy Organization of Iran, “Safety Analysis Report of Tehran Research Reactor,” Rev. 2 (October 2002).
9
10. Atomic Energy Organization of Iran, “Distribution of thermal neutron flux a long fuel elements and empty boxes in reactor core,” Neutron Physics Group Reports (1385).
10
11. International Atomic Energy Agency, “Therapeutic applications of radiopharmaceutical,” IAEA-TECDOC-1228, 199-295 & 207-214 (2001).
11
12. MDS, “Rhenium-186 Radiochemical Sodium Perrhenate Solution,” MDS Inc, MDS Nordion division, www.mdsnordion.com (2008).
12
ORIGINAL_ARTICLE
Study of Gaseous Pollutants Purification and Filtration System of Uranium Conversion Facility (UCF)
Gaseous pollutants purification and filtration system of Uranium Conversion Facility includes four Foam Scrubbers and four groups of 24 frame filters to remove dangerous gases and particles from polluted air. In this paper, the purification processes of the dangerous gases in foam towers and removal of the particles in filters are presented. The gas pollution of this facility includes dangerous chemical and radioactive compounds; as a result the high efficiency can be one of the main properties of this purification system. For achieving this goal, theoretical and experimental studies are made to select filter frame media. Our theoretical studies show that the characteristics of the best filter media are: upper thickness, high porosity and formed by fine fibers. The experimental studies to select suitable media concerning efficiency, pressure drop, chemical and mechanical resistance are done in 30 filter media. The efficiency of chosen media is determined of about 99.7% by the experiment. In addition, a semi industrial sample of foam scrubber system was designed and built. The absorption efficiency of the system for acidic gas, the same as in UCF, was measured to be about 97%. Considering these results and prevailing the standards used in UCF and also the level of air pollution in workshops, the air pollution level in the stack outlet must not surpass the authorized amount.
https://jonsat.nstri.ir/article_467_087dd4b52833c8ac826d94f213ae205f.pdf
2010-05-22
63
69
Purification and Filtration
Gaseous Pollutants
Uranium Conversion Facility
Foam Scrubbers System
A
Sadighzade
asadigzadeh@aeoi.org.ir
1
پژوهشکده چرخه سوخت هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 8486-11365، تهران ـ ایران
LEAD_AUTHOR
M
Rostami
2
پژوهشکده چرخه سوخت هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 8486-11365، تهران ـ ایران
AUTHOR
S
Sana
3
پژوهشکده چرخه سوخت هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 8486-11365، تهران ـ ایران
AUTHOR
ا. صدیقزاده و ف. مبصر، ”گزارش شبیهسازی دستگاه برج جذبی،“ گزارش داخلی سازمان انرژی اتمی ایران (1381).
1
م. حسینی، ”بررسی روشهای آزمون فیلترهای الیافی هوای با کارآیی بالا،“ پایاننامه کارشناسی ارشد (1378).
2
ا. صدیقزاده، م. حسینی، م.ر. اسدی، ”بررسی نظری و علمی ساز و کارهای حذف ذرات و تعیین کیفیت صافیهای الیافی با کارآیی بسیار بالا،“ نشریه علمی سازمان انرژی اتمی ایران، شماره 22 (1379).
3
W.S. Norman, Absorption, “Distillation and Cooling Tower,” Longmans (1961).
4
ا. صدیقزاده، م. علیابراهیمی، س. سرکاری، ”گزارش آزمون مدیای فریم فیلترها،“ گزارش داخلی سازمان انرژی اتمی ایران (1381).
5
ن. طاهرخانی، ”طراحی، ساخت و بهینهسازی یک پایلوت اسکرابر،“ پایاننامه کارشناسی ارشد (1384).
6
ORIGINAL_ARTICLE
Investigation of Percentage Depth Dose (PDD) and Dose Rate Dependence of PAGAT Polymer Gel Dosimeter for Photon Beams Using MRI Technique
In this work, the investigation of the normoxic PAGAT polymer-gel dosimeter percentage depth dose (PDD) and it’s dose rate dependence has been made. Using MRI, the formulation to give the maximum change in the transverse relaxation rate R2 was determined to be 4.5% N,N'-methylen-bis-acrylamide©(bis), 4.5% acrylamid (AA), 5% gelatine, 5mM tetrakis (hydroxymethyl) phosphonium chloride (THPC), 0.01 mM hydroquinone (HQ) and 86% HPLC(Water). Irradiation of vials was performed using photon beams of Co-60 therapy unit and an Electa linear accelerator. Gel dosimeters were imaged in a Siemens Symphony 1.5 Tesla clinical MRI scanner using a head coil. Post-manufacture irradiation and post imaging times were both selected to be 1 day. For determing the percentage depth dose of the PAGAT gel it was found that at the depth of 21cm, the percentage depth dose for 1.25 MeV γ-ray photons of 60Co and for 4,6 and 18 MV x-ray photons of Electa linear accelerator, are 48%, 52%, 57.3% and 59.73%, respectively. Thus, in the case of the higher energy photon beams, a higher dose can be delivered to deep-seated tumors. The dose rate dependence of PDD was studied for 6 MV x-ray photons with the use of dose rates of 80, 160, 240, 320, 400 and 480cGy/min. No trend in polymer-gel dosimeter 1/T2 dependence was found on the mean dose rate and energy for the photon beams.
https://jonsat.nstri.ir/article_468_a618388137d02b6b6cfc88ee20a8f054.pdf
2010-05-22
70
76
B
Azadbakht
1
دانشکده مهندسی، دانشگاه آزاد اسلامی واحد بروجرد، صندوق پستی: 518، بروجرد- ایران
LEAD_AUTHOR
K
Hadad
2
دانشکده مهندسی هستهای، دانشگاه شیراز، صندوق پستی: 84471-71946، شیراز- ایران
AUTHOR
M.H
Zahmatkesh
3
انستیتو پرتو پزشکی نوین تهران، صندوق پستی: 599-14665، تهران- ایران
AUTHOR
1. M. Oldham, S. Kumar, J. Wong, D.A. Jaeffray, “Optical-CT gel-dosimetry I:Basic investigation,” Med. phys. 30(4), 623-634 (April 2003).
1
2. E.B. Podgorsak, [Editor of] “Radiation oncology physics: a handbook for teachers and students,” ISBN. 92-0-107304-6, International Atomic Energy Agency (IAEA), Austria (2005).
2
3. K. Vergote, “Development of polymer gel dosimetry for applications in intensity-modulated radiotherapy,” PhD. Thesis. Department of Radiotherapy and Nuclear Medicine, Faculty of Medicine and Health Sciences, University of Gent, Belgum (2005).
3
4. A.J. Venning, S. Brindha, B. Hill, C. Baldock, “Preliminary study of a normoxic PAG gel dosimeter with tetrakis (hydroxymethyl) phosphonium chloride as an antioxidant,” Third International Conference on Radiotherapy Gel Dosimetry. Journal of Physics: Conference Series, 155-158, 3(2004).
4
5. M.H. Zahmatkesh, R. Kousari, Sh. Akhlaghpour, S.A. Bagheri, “MRI gel dosimetry with methacrylic acid. Ascorbic acid. Hydroquinone and Copper in Aharose (MAGICA) gel,” Preliminary Proceedinges of DOSGEL. Sep. 13-16, Ghent. Belgium (2004).
5
6. Y. De Deen, N. Reynaert, C. De Wagter, “On the accuracy of monomer/polymer gel dosimetry in the proximity of high-dose-rate Ir192source,” Phys. Med Biol. 46, 2801-2825 (2001).
6
7. A.J. Venning, B. Hill, S. Brindha, B.J. Healy, C. Baldock, “Investigation of the PAGAT polymer gel dosimeter using magnetic resonance imaging,” Phys. Med. Biol. 50, 3875-3888 (2005).
7
8. B. Hill, A. Venning, C. Baldock, “The dose response of normoxic polymer gel dosimeters measured using X-ray CT,” The British Journal of Radiology, 78, 623-630 (2005).
8
9. J. Novontny, V. Spevacek, P. Dvorak, T. Cechak, “Energy and dose rate dependence of BANG-2 polymer-gel dosimeter,” Med. Phys. 28, 0094-2405 (2001).
9
10. E. Pappas, A. Angelopoulos, P. Kipouros, L. Vlachos, S. Xenofos, I. Seimenis, “Evaluation of the performance of VIPAR polymer gels,” Med. Phys. Biol. 48, N65-N73 (2003).
10
11. M.J. Maryanski, G.S. Ibbott, P. Estman, R.J. Schulz, J.C. Gore, “Radiation therapy dosimetry using magnetic resonance imaging of polymer gels,” Med. Phys. 23, 699-705 (1996).
11
ORIGINAL_ARTICLE
Preparation of CaF2 Thermoluminescence Dosimeter and Investigating of the Influence of Dy Impurity in it’s Dosimetric Properties
In this study, CaF2 pellet samples were prepared and its thermoluminescence (TL) properties were investigated after gamma irradiation. The TL glow curve of the CaF2 pellet has four peaks at around 135, 170, 260 and 370ºC for the heating rate of 10ºC/S. The main peak occurs at 260ºC. The sensivity of CaF2 and Dy doped CaF2 were examined. The observed TL sensivity of the prepared CaF2 pellet is abut five times than that of TLD-100. The sensivity of the Dy doped CaF2 is approximately 18 times higher than that of TLD-100. The fading is approximately 13% in one day, 36% in two days and 50% in 500 hours. These examinations repeated for 10 times and all the results were found to be consistant. These properties make the CaF2 pellets a useful can dilate for γ-ray irradiation dosimetry applications.
https://jonsat.nstri.ir/article_469_ba7921721e38c21b9bf9acb7ce7efbdc.pdf
2010-05-22
77
82
Calcium Fluoride
Thermoluminescence Dosimeter
Dy
Glow Curve
Sensitivity
Fading
M
Gholampoor
1
- دانشکده فیزیک، دانشگاه یزد، صندوق پستی: 741-89195، یزد- ایران 2- گروه فیزیک، دانشکده علوم پایه، دانشگاه افسری امام علی (ع)، کد پستی: 1317893471، تهران- ایران
LEAD_AUTHOR
J
Gheisari
2
- دانشکده فیزیک، دانشگاه یزد، صندوق پستی: 741-89195، یزد- ایران
AUTHOR
Gh
Mirjalili
3
- دانشکده فیزیک، دانشگاه یزد، صندوق پستی: 741-89195، یزد- ایران3- پژوهشکده کاربرد پرتوها، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 389-89175، یزد- ایران
AUTHOR
M.A
Shafaie
4
دانشکده فیزیک، دانشگاه یزد، صندوق پستی: 741-89195، یزد- ایران
AUTHOR
l
shekari
5
4- گروه فیزیک، دانشکده علوم، دانشگاه تربیت مدرس، صندوق پستی: 317-14115، تهران- ایران
AUTHOR
A.R
Moini
6
1- دانشکده فیزیک، دانشگاه یزد، صندوق پستی: 741-89195، یزد- ایران
AUTHOR
A
Shahvar
7
5- آزمایشگاه دزیمتری استاندارد (SSDL)، پژوهشکده تحقیقات کشاورزی، پزشکی و صنعتی، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی ایران، صندوق پستی: 498-31485، کرج- ایران
AUTHOR
S.W.S. McKeever, M. Moscivitch, P.D. Townsend, “THERMOLUMINESCENCE DOSIMETRY MATERIALS: PROPERTIES AND USES,” Nuclear Technology Publishing, Ashford, Kent, 74-79, 109-111 (1995).
1
B. Marczewska, P. Bilski, M. Budzanowski, P. Olko, V. Chernov, “Dosimetry properties of Tm-doped single CaF2 crystals,” Radiation Measurements, Vol. 33, 571-576 (2001).
2
J. Manrique, S. Angulo, M.P. Pardo, R.Gastesi, A. Dela Cruz, A. Perez, “Thermoluminescence spectra of natural CaF2 irradiated by 10MeV electrons,” Radiation Measurements, Vol. 41 145-153 (2006).
3
C.C. Guimarães, E.Okuno, “Blind performance testing of personal and environmental dosimeters based on TLD-100 and natural CaF2: NaCl,” Radiation Measurements, Vol. 37 127-132 (2003).
4
F.O. Ogundare, F.A. Balogun, L.A. Hussain, “Kinetic characterization of the thermoluminescence of natural fluorite,” Radiation Measurements, Vol. 38, 281–286 (2004).
5