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Evaluation of transmutation of 137Cs(γ,n) 136Cs using ultra-intense lasers in solid targets

Sadighi Bonabi, R ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1088/0256-307X/23/6/021
  3. Publisher: Institute of Physics Publishing , 2006
  4. Abstract:
  5. Relativistic electrons produced in ultra-intense laser-solid interaction generate highly collimated γ-ray beams through Bremsstrahlung that can be used to induce photonuclear reactions. Photonuclear transmutation (of (γ,n) type) of 137Cs, one of the hazardous nuclear wastes with half-life of 30.17 years which cannot be transmuted practically with neutron bombardment due to its very low neutron capture cross section, has been considered. Nuclear activity of produced 136Cs with half-life of 13.16 days has been evaluated analytically using available experimental data. With irradiating a 137Cs sample by p-polarized laser light of 10 20Wcm-2 and the repetition rate of 10Hz for 30min, the activity of 0.24 Bq is obtained. It is found that intensity has a large effect in yield around 1021Wcm-2. For similar laser with intensity of 5×1021Wcm-2, the activity increases with a factor of 105. © 2006 Chiness Physical Society and IOP Publishing Ltd
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  8. Source: Chinese Physics Letters ; Volume 23, Issue 6 , 2006 , Pages 1434-1436 ; 0256307X (ISSN)
  9. URL: https://iopscience.iop.org/article/10.1088/0256-307X/23/6/021