A new term "Jzeff" derived from measured total attenuation coefficients of photons near the absorption edges of some compounds

被引：3
作者：
Polat, Recep [2 ]
Icelli, Orhan [1 ]
机构：
[1] Yildiz Tekn Univ, Dept Phys, Fac Art & Sci, TR-34220 Istanbul, Turkey
[2] Erzincan Univ, Fac Educ, Dept Phys Educ, TR-24030 Erzincan, Turkey
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2010年 / 621卷 / 1-3期
关键词：
Mass attenuation coefficients; Molecular; Atomic cross-sections; Effective atomic number; Jump ratio; Jump factor; EFFECTIVE ATOMIC NUMBERS; BIOLOGICALLY IMPORTANT COMPOUNDS; ESSENTIAL AMINO-ACIDS; X-RAY-ABSORPTION; RANGE; KEV; CROSS-SECTIONS; TRANSMISSION EXPERIMENTS; SHIELDING MATERIALS; ELECTRON-DENSITIES; ENERGY-ABSORPTION;
D O I：
10.1016/j.nima.2010.04.061
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In order to determine the effect of XAFS (X-ray absorption fine structure) on J(zeff) we have measured mu/p values of compounds, which are determined by the mixture rule or the independent atomic model. Also, we want to obtain both XAFS effect and non-applicability or applicability of mixture rule. The most crucial finding in this study is that measurement of the effective atomic number is not appropriate near the absorption edge and the effective atomic number is affected by near the absorption edge. The results obtained have been compared with theoretical values. Also, the objective of this study is to show that there is a term "J(zeff)" between effective atomic numbers and absorption jump factor. (C) 2010 Elsevier B.V. All rights reserved.
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页码：358 / 363
页数：6
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