Use of CR 39 Films for Evaluation of Shielding Efficacy of Materials against Fast Neutrons

  • S. Kumar Defence Laboratory, Jodhpur
  • Deepak Gopalani Defence Laboratory, Jodhpur
  • P. K. Bhatnagar Defence Laboratory, Jodhpur
  • R. Kumar Defence Laboratory, Jodhpur
  • G. L. Beheti Defence Laboratory, Jodhpur
  • A. Kumar Defence Laboratory, Jodhpur
DOI: https://doi.org/10.14429/dsj.42.4388
Keywords: Sand polymers, Metal alloys

Abstract

CR-39 films have been used for evaluation of neutron shielding of metal alloys, different types of rubbers, sand polymers, etc. These films have been chosen because of their ability to record fast neutrons from 200 keV-10 MeV and their insensitivity to gamma radiations. Tenth value layer (TVL) for the materials studied varies from 10.5 to 28.6 cm. In addition, the values of TVL have also been computed for standard material, such as Al, steel, etc. Using neutron removal cross-section data, the results have been compared with those of experimentally determined values. The results seem to be in agreement within approximate 10 per cent variation.

Author Biographies

Deepak Gopalani, Defence Laboratory, Jodhpur
Mr Deepak Gopalani, post-graduated in Physics from University of Jodhpur, in !990. Currently he is working as a Scientist at Defence Laboratory, Jodhpur, and actively involved in various applications of SSNTDs. The areas of his interest include neutron spectrometry, neutron radiography, neutron dosimetry, and indigenous dev elopment of SSNTD films. He is a life member of IARP, Nucle ar Track Society of India and has published seve ral research papers in various national/international journals.
P. K. Bhatnagar, Defence Laboratory, Jodhpur
Defence Laboratory, Jodhpur
R. Kumar, Defence Laboratory, Jodhpur
Mr R Kumar obtained his MTech in Material Technology from IIT , Bombay in 1987. Since 1983 he is working as a Scientist in Defence Laboratory, Jodhpur. His main fields of interest are NDT and mater ials research.
G. L. Beheti, Defence Laboratory, Jodhpur
Mr  GL Baheti obtained MSc in Physics from Rajasthan University, Jaipur. Since 1982 he is working as a Scientist at Defence Laboratory , Jodhpur. His fields of inte rest are neutron radiography, shielding studies. image processing, and application of radioisotopes for non-destructive testing
A. Kumar, Defence Laboratory, Jodhpur
Defence Laboratory, Jodhpur
Published
2013-01-01
How to Cite
Kumar, S., Gopalani, D., Bhatnagar, P., Kumar, R., Beheti, G., & Kumar, A. (2013). Use of CR 39 Films for Evaluation of Shielding Efficacy of Materials against Fast Neutrons. Defence Science Journal, 42(4), 231-233. https://doi.org/10.14429/dsj.42.4388
Issue
Vol 42 No 4: Particle tracks in Solids
Section
Special Issue Papers
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