Journal of Nuclear Science, Engineering and Technology (JONSAT)
In cooperation with the Iranian Nuclear Society

Investigation of CaSO4:Dy Thermoluminescence Dosimeter Response to Gamma Ray Doses

Document Type : Research Paper

Authors

A.R Moini
M Gholampoor
J Gheisari
Gh Mirjalili
M.A Shafaie
L Shekari
A Shahvar
Abstract
CaSO4:Dy thermoluminesconce dosimeter (TLD) is one of the best materials for environmental and personal dosimetry due to its high sensitivity and high dose saturation. In this investigation, the dose response of CaSO4:Dy with three concentrations, 0.11, 0.15 and 0.2 mol% of dysprosium, to 60Co gamma rays doses up to 3.7Gy were studied. The effect of heating program on glow curve was also studied. The glow peaks of CaSO4:Dy were seen at 100oC and 167oC. The pellets have high sensitivity and in the case of sample with 0.2 mol% of dysprosium, the relative sensitivity is 12. The dose response is found to be linear up to 3.7Gy and the fading was approximately about 36% in 10 days.

Highlights

 

  1. 1.    S.W.S. McKeever, M. Moscovitch, P.D. Townsend, “Thermoluminescence dosimetry materials,” Nuclear Technology Publ, Ashford, Kent 192 (1995).

 

  1. 2.    T. yamashita, N. Nada, H. Onishi, In: Porc, “2nd Conf. on luminescence dosimetry,” Gatlinburg, CONF 680920, p. 4 (1968); Health Phys. 56, 551 (1986).

 

  1. 3.    M.G. Guelev, I.T. Mischev, B. Burgkhardt, E. Piesch Radiation Protection Dosimetry, 51-35 (1994).

 

  1. 4.    R. Abubakar, S. Untung, M. Oberhofer, Radiation Protection Dosimetry 33, 95 (1990).

 

 

Keywords

Dysprosium Impurity
Thermoluminescent Dosimeter
Glow Curve
Fading
Gamma Ray
Sensitivity

  1.  

    1. 1.    S.W.S. McKeever, M. Moscovitch, P.D. Townsend, “Thermoluminescence dosimetry materials,” Nuclear Technology Publ, Ashford, Kent 192 (1995).

     

    1. 2.    T. yamashita, N. Nada, H. Onishi, In: Porc, “2nd Conf. on luminescence dosimetry,” Gatlinburg, CONF 680920, p. 4 (1968); Health Phys. 56, 551 (1986).

     

    1. 3.    M.G. Guelev, I.T. Mischev, B. Burgkhardt, E. Piesch Radiation Protection Dosimetry, 51-35 (1994).

     

    1. 4.    R. Abubakar, S. Untung, M. Oberhofer, Radiation Protection Dosimetry 33, 95 (1990).

     

     

Home