In cooperation with the Iranian Nuclear Society

Document Type : Research Paper

Authors

Photonics and Quantum Technologies Research School, Nuclear Science and Technology Research Institute, AEOI, P.O.Box: 14395-836, Tehran - Iran

Abstract

In this work, laboratory-scale laser isotope separation of 13C by isotope-selective multi-photon dissociation of CF2HCl gas molecules has been done. To do this, the pulses of a tunable TEA CO2 laser, which have been shortened using a plasma shutter, were focused inside the irradiation cell with fluence in 50 J/cm2. The irradiation cell was filled with 10-20 mbar of CF2HCl gas with CF2HCl:He ratio of 1:5 and 1:10. It has been shown that the abundance of 13C in C2F4 product of dissociation increases with decreasing of the gas pressure and the number of the incident pulses. In these experiments, the highest abundance of 13C isotope was obtained with CF2HCl: He ratio of 1:5 and ten mbar pressure of CF2HCl gas, irradiated by 1500 pulses with 50 J/cm2 fluences.

Highlights

  1. R.V. Ambartsumian, et al., Investigation of dissociation of BCl3 molecules in the field of an intense CO2-laser pulse, Zh. Eksp. Teor. Fiz., 69, 72 (1975).

 

  1. J.L. Lyman, et al., Isotopic enrichment of SF6 in 34S by multiple absorption of CO2 laser radiation, Appl. Phys. Lett., 27(2), 87 (1975).

 

  1. I. Deac, Parametric study of the IRMPD of CF2HCl molecules with the 9P22 CO2 laser line, Appl. Phys., B. 51(3), 211 (1990).

 

  1. H.L. Chen, C. Borzileri, Nitrogen isotope separation by multiphoton dissociation of methylamine, J. Appl. Phys., 50(11), 7177 (1979).

 

  1. J.B. Marling, Laser isotope separation of deuterium, Chem. Phys. Lett, 34(1), 84 (1975).

 

  1. J.L. Lyman, S.D. Rockwood, Enrichment of boron, carbon, and silicon isotopes by multiple‐photon absorption of 10.6‐μm laser radiation, J. Appl. Phys., 47(2), 595 (1976).

 

  1. R.J. Jensen, et al., Prospects for uranium enrichment, Laser Focus, 12, 51 (1976).

 

  1. P. Parvin, et al., Selective Obliteration of SF6 Molecules Based on Multiphoton Absorption, CLEO-Europe/EQEC (2003).

 

  1. K. Silakhori, et al., Utilizing NH3 Laser Pulses in Multiphoton Dissociation Process of CCl4 Molecules with 13C Isotope Selectivity, JonSat. 30(2), 38 (2009).

 

  1. H. Alzoubi, et al., The Use of 13C-Urea Breath Test for Non-Invasive Diagnosis of Helicobacter pylori Infection in Comparison to Endoscopy and Stool Antigen Test, Diagnostics, 10(7), 448 (2020).

 

  1. M. Esposito, et al., Application of stable carbon isotopes in a subtropical North Atlantic MesocosmStudy: A new approach to assess CO2 effects on the marine carbon cycle, Front. Mar. Sci., 6, 616 (2019).

 

  1. R. Castillo-Argaez, et al, Leaf gas exchange and stable carbon isotope composition of redbay and avocado trees in response to laurel wilt or drought stress, EEB, 171, 103948 (2020).

 

  1. A. Mora-González, et al., Complex agriculture during the second millennium bc: isotope composition of carbon studies (13C) in archaeological plants of the settlement Cerro del Castillo de Alange (SW Iberian Peninsula, Spain), Veg. Hist. Archaeobotany, 27(3), 453 (2018).

 

  1. C. Pironti, et al., Determination of the 13C/12C carbon isotope ratio in carbonates and bicarbonates by 13C NMR spectroscopy, Anal. Chem., 89(21), 11413 (2017).

 

  1. G.I. Abushelishvili, et al., Selective dissociation of CF3I in a CO2-laser infrared field in the presence of acceptors, Sov. J. Quantum Electron, 11(3), 326 (1981).

 

  1. O.V. Boyarkin, et al., Collisionally enhanced isotopic selectivity in multiphoton dissociation of vibrationally excited CF3H, J. Chem. Phys., 118(1), 93 (2003).

 

  1. V.B. Laptev, S.V. Pigulsky, V.S. Mezhevov, Production of high-enriched carbon-13 by two-stage laser method, In Journal of Physics: Conference Series (Vol. 1696, No. 1, p. 012016). IOP Publishing. (2020, December).

 

  1. P. Parvin, et al., Molecular laser isotope separation versus atomic vapor laser isotope separation, Prog. Nucl. Energy., 44(4), 331 (2004).

 

  1. M. Gauthier, et al., Second-stage enrichment in the laser separation of carbon isotopes, Appl. Phys., B. 35(3), 173 (1984).

 

  1. V. Parthasarathy, et al., Efficient multiphoton dissociation of CF2HCl in waveguide reactors with high selectivity, J. Photochem. Photobiol., A. 110(1), 11 (1997).

 

  1. S. Beheshtipour, et al., Investigation on the TEA CO2 laser-induced optical breakdown in different gases and its effect on the pulses shape, JonSat. 40(3), 46 (2019).

 

  1. W. Fuss, et al., Isotope selective dissociation of CHClF2 by a one and two-wavelength Q-switched CO2 laser, Z. Phys. D Atoms, Molecules and Clusters, 24(1), 47 (1992).

Keywords

  1. R.V. Ambartsumian, et al., Investigation of dissociation of BCl3 molecules in the field of an intense CO2-laser pulse, Zh. Eksp. Teor. Fiz., 69, 72 (1975).

 

  1. J.L. Lyman, et al., Isotopic enrichment of SF6 in 34S by multiple absorption of CO2 laser radiation, Appl. Phys. Lett., 27(2), 87 (1975).

 

  1. I. Deac, Parametric study of the IRMPD of CF2HCl molecules with the 9P22 CO2 laser line, Appl. Phys., B. 51(3), 211 (1990).

 

  1. H.L. Chen, C. Borzileri, Nitrogen isotope separation by multiphoton dissociation of methylamine, J. Appl. Phys., 50(11), 7177 (1979).

 

  1. J.B. Marling, Laser isotope separation of deuterium, Chem. Phys. Lett, 34(1), 84 (1975).

 

  1. J.L. Lyman, S.D. Rockwood, Enrichment of boron, carbon, and silicon isotopes by multiple‐photon absorption of 10.6‐μm laser radiation, J. Appl. Phys., 47(2), 595 (1976).

 

  1. R.J. Jensen, et al., Prospects for uranium enrichment, Laser Focus, 12, 51 (1976).

 

  1. P. Parvin, et al., Selective Obliteration of SF6 Molecules Based on Multiphoton Absorption, CLEO-Europe/EQEC (2003).

 

  1. K. Silakhori, et al., Utilizing NH3 Laser Pulses in Multiphoton Dissociation Process of CCl4 Molecules with 13C Isotope Selectivity, JonSat. 30(2), 38 (2009).

 

  1. H. Alzoubi, et al., The Use of 13C-Urea Breath Test for Non-Invasive Diagnosis of Helicobacter pylori Infection in Comparison to Endoscopy and Stool Antigen Test, Diagnostics, 10(7), 448 (2020).

 

  1. M. Esposito, et al., Application of stable carbon isotopes in a subtropical North Atlantic MesocosmStudy: A new approach to assess CO2 effects on the marine carbon cycle, Front. Mar. Sci., 6, 616 (2019).

 

  1. R. Castillo-Argaez, et al, Leaf gas exchange and stable carbon isotope composition of redbay and avocado trees in response to laurel wilt or drought stress, EEB, 171, 103948 (2020).

 

  1. A. Mora-González, et al., Complex agriculture during the second millennium bc: isotope composition of carbon studies (13C) in archaeological plants of the settlement Cerro del Castillo de Alange (SW Iberian Peninsula, Spain), Veg. Hist. Archaeobotany, 27(3), 453 (2018).

 

  1. C. Pironti, et al., Determination of the 13C/12C carbon isotope ratio in carbonates and bicarbonates by 13C NMR spectroscopy, Anal. Chem., 89(21), 11413 (2017).

 

  1. G.I. Abushelishvili, et al., Selective dissociation of CF3I in a CO2-laser infrared field in the presence of acceptors, Sov. J. Quantum Electron, 11(3), 326 (1981).

 

  1. O.V. Boyarkin, et al., Collisionally enhanced isotopic selectivity in multiphoton dissociation of vibrationally excited CF3H, J. Chem. Phys., 118(1), 93 (2003).

 

  1. V.B. Laptev, S.V. Pigulsky, V.S. Mezhevov, Production of high-enriched carbon-13 by two-stage laser method, In Journal of Physics: Conference Series (Vol. 1696, No. 1, p. 012016). IOP Publishing. (2020, December).

 

  1. P. Parvin, et al., Molecular laser isotope separation versus atomic vapor laser isotope separation, Prog. Nucl. Energy., 44(4), 331 (2004).

 

  1. M. Gauthier, et al., Second-stage enrichment in the laser separation of carbon isotopes, Appl. Phys., B. 35(3), 173 (1984).

 

  1. V. Parthasarathy, et al., Efficient multiphoton dissociation of CF2HCl in waveguide reactors with high selectivity, J. Photochem. Photobiol., A. 110(1), 11 (1997).

 

  1. S. Beheshtipour, et al., Investigation on the TEA CO2 laser-induced optical breakdown in different gases and its effect on the pulses shape, JonSat. 40(3), 46 (2019).

 

  1. W. Fuss, et al., Isotope selective dissociation of CHClF2 by a one and two-wavelength Q-switched CO2 laser, Z. Phys. D Atoms, Molecules and Clusters, 24(1), 47 (1992).