The effective atomic number revisited in the light of modern photon-interaction cross-section databases

被引：29
|
作者：
Manohara, S. R. [1 ]
Hanagodimath, S. M. [1 ]
Thind, K. S. [3 ]
Gerward, L. [2 ]
机构：
[1] Gulbarga Univ, Dept Phys, Gulbarga 585106, Karnataka, India
[2] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark
[3] Guru Nanak Dev Univ, Dept Phys, Amritsar 143005, Punjab, India
来源：
APPLIED RADIATION AND ISOTOPES | 2010年 / 68卷 / 4-5期
关键词：
Effective atomic number; Photon-interaction cross-sections; Biomolecules; RAY ATTENUATION COEFFICIENTS; BIOLOGICALLY IMPORTANT COMPOUNDS; ESSENTIAL AMINO-ACIDS; RANGE; KEV; ELECTRON-DENSITIES; ENERGY-ABSORPTION; MIXTURES; ELEMENTS;
D O I：
10.1016/j.apradiso.2009.09.047
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The effective atomic number, Z(eff), has been calculated for fatty acids and cysteine. It is shown that Z(eff) is a useful parameter for low-Z materials at any energy above 1 key. Absorption edges of medium-Z elements may complicate the energy dependence of Z(eff) below 10 key. The notion of Z(eff) is perhaps most useful at energies where Compton scattering is dominating, and where Z(eff) is equal to the mean atomic number, < Z >, over a wide energy range around 1 MeV. (c) 2009 Elsevier Ltd. All rights reserved.
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页码：784 / 787
页数：4
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