Z-dependence of spectral photon energy distributions of thick target bremsstrahlung

被引：6

作者：

Dhaliwal, AS ^{[1
]}

机构：

[1] Sant Longowal Inst Engn & Technol, Dept Phys, Longowal 148106, Punjab, India

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2005年 / 234卷 / 03期

关键词：

bremsstrahlung; Z-dependence;

D O I：

10.1016/j.nimb.2005.02.005

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The Z-dependence of spectral photon energy distributions of external bretrisstrahlung (EB) in thick targets of Al, Cu, Sn and Pb, produced by S-35 and Sr-89, were studied. Theoretical EB photon distributions were obtained both from Elwert corrected Bethe-Heitler, and Tseng and Pratt theories, The experimental EB spectra were measured using a thick NaI(Tl) detector. It is found that the spectral shapes of EB spectra as a function of photon energy k displays a Z(m) dependence on the atomic number Z of the target material. The proportionality factor shows an exponentially decaying dependency on photon energy k that is inversely proportional to the end point energy of the beta particles coming from a particular beta emitter. The results agree well with theoretical Calculations based on different models, (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：194 / 202

页数：9

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