Effect of detector collimator and sample thickness on 0.662 MeV multiply Compton-scattered gamma rays

被引：41

作者：

Singh, M ^{[1
]}

Singh, G ^{[1
]}

Sandhu, BS ^{[1
]}

Singh, B ^{[1
]}

机构：

[1] Punjabi Univ, Dept Phys, Patiala 147002, Punjab, India

来源：

APPLIED RADIATION AND ISOTOPES | 2006年 / 64卷 / 03期

关键词：

singly and multiply Compton-scattered events; saturation thickness; signal-to-noise ratio; multiply scatter fraction (MSF);

D O I：

10.1016/j.apradiso.2005.08.015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The simultaneous effect of detector collimator and sample thickness on 0.662 MeV Multiply Compton-scattered gamma photons was studied experimentally. An intense collimated beam, obtained from 6-Ci (CS)-C-137 source, is allowed to impinge on cylindrical aluminium samples of varying diameter and the scattered photons are detected by a 51 mm x 51 mm NaI(TI) scintillation detector placed at 90 degrees to the incident beam. The full energy peak corresponding to singly scattered events is reconstructed analytically. The thickness at which the multiply scattered events saturate is determined for different detector collimators. The parameters like signal-to-noise ratio and multiply scatter fraction (MSF) have also been deduced and support the work carried out by Shengli et al. [2000. EGS4 simulation of Compton scattering for nondestructive testing. KEK proceedings 200-20, Tsukuba, Japan, pp. 216-223] and Barnea et at. [1995. A study of multiple scattering background in Compton scatter imaging. NDT & E International 28, 155-162] based upon Monte Carlo calculations. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：373 / 378

页数：6

共 14 条

[1] A STUDY OF MULTIPLE-SCATTERING BACKGROUND IN COMPTON SCATTER IMAGING [J].