Z dependence of thick-target. beta. -ray backscattering
Journal Article
·
· J. Appl. Phys.; (United States)
Variation of ..beta..-ray backscattering with the atomic number of target material has been studied using thick targets of polythene, aluminum, iron, copper, zinc, tin, silver, tungsten, and lead for five ..beta.. emitters, viz., /sup 35/S, /sup 147/Pm, /sup 204/Tl, /sup 32/P, and /sup 90/Sr-/sup 90/Y. Effects of geometry and ..beta..-ray end-point energy have been investigated using a reflection geometry in which the geometry factors were varied by more than 40 and ..beta..-ray energy varied over a range 0.167--2.27 MeV. It is found that the mean value of the index of Z dependence of ..beta..-ray backscattering is 1.840.05 over these regions of geometry and energy. Deviations for soft ..beta.. emitters have been confirmed as due to air absorption. The importance of these results in studies of two-component systems is emphasized.
- Research Organization:
- Nuclear Science Laboratories, Department of Physics, Punjabi University, Patiala-147002, India
- OSTI ID:
- 5455125
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 51:4; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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