Analyses of stopping power measurements for 0.90-2.50 MeV protons and deuterons traversing Al2O3 targets

被引：1

作者：

Porter, LE ^{[1
]}

机构：

[1] Washington State Univ, Radiat Safety Off, Pullman, WA 99164 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2000年 / 170卷 / 1-2期

关键词：

D O I：

10.1016/S0168-583X(00)00165-8

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Recently reported measurements of the stopping power of Al2O3 for 0.90-2.50 MeV protons and deuterons have been analyzed in terms of modified Bethe-Bloch theory. Values of the mean excitation energy (I) and Barkas-effect parameter (b) have been extracted from the data, yielding results for I and b, respectively, of 176.8 eV and 0.83 for protons, and of 182.7 eV and 1.02 for deuterons. These values of I exceed the additivity-based value by 32% for proton data and by 36% for deuteron data. Moreover, both extracted values of b lie well below the expected interval of 1.3-1.5. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：35 / 38

页数：4

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