Proton elastic scattering and proton induced γ-ray emission cross-sections on Na from 2 to 5 MeV

被引：25
|
作者：
Caciolli, A. [1 ,2 ]
Calzolai, G. [1 ,2 ]
Chiari, M. [1 ,2 ]
Climent-Font, A. [3 ]
Garcia, G. [3 ]
Lucarelli, F. [1 ,2 ]
Nava, S. [1 ,2 ]
机构：
[1] Univ Florence, Dept Phys, I-50019 Florence, Italy
[2] Ist Nazl Fis Nucl, I-50019 Florence, Italy
[3] Univ Autonoma Madrid, CMAM, Madrid, Spain
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2008年 / 266卷 / 08期
关键词：
cross-sections; elastic scattering; PIGE; proton; sodium;
D O I：
10.1016/j.nimb.2007.11.025
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Differential cross-sections for proton elastic scattering on sodium and for gamma-ray emission from the reactions Na-23(p,p'gamma)Na-23 (E-gamma = 440 keV and E-gamma = 1636 keV) and Na-23(p,alpha'gamma)Ne-20 (E-gamma = 1634 keV) were measured for proton energies from 2.2 to 5.2 MeV using a 63 mu g/cm(2) NaBr target evaporated on a self-supporting thin C film. The gamma-rays were detected by a 38% relative efficiency Ge detector placed at an angle of 135 degrees with respect to the beam direction, while the backscattered protons were collected by a Si surface barrier detector placed at a scattering angle of 150 degrees. Absolute differential cross-sections were obtained with an overall uncertainty estimated to be better than +/- 6.0% for elastic scattering and +/- 12% for gamma-ray emission, at all the beam energies. To provide a convincing test of the overall validity of the measured elastic scattering cross-section, thick target benchmark experiments at several proton energies are presented. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1392 / 1396
页数：5
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