Investigations of effect of target thickness and detector collimation on 662 keV multiply backscattered gamma photons

被引：11

作者：

Sabharwal, Arvind D. ^{[1
]}

Sandhu, B. S. ^{[1
]}

Singh, Bhajan ^{[1
]}

机构：

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

来源：

RADIATION MEASUREMENTS | 2009年 / 44卷 / 04期

关键词：

Multiply backscattered events; Saturation thickness; Signal-to-noise ratio; Number and energy albedos; RAYS;

D O I：

10.1016/j.radmeas.2009.06.010

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The present studies aimed to investigate the effects of detector collimation and target thickness on multiply backscattered gamma photons. The numbers of multiply backscattered events, having energy the same as in singly scattered distribution, are found to be increasing with target thickness, and saturate for a particular thickness known as saturation thickness. The saturation thickness is not altered by the variation in the collimator opening. The number and energy albedos, characterizing the reflection probability of a material, are also evaluated. Monte Carlo calculations support the present experimental work. (C) 2009 Published by Elsevier Ltd.

引用

页码：411 / 414

页数：4

共 9 条

[1]

BAUER GEW, 1981, COMPTON SCATTERING E, V364, P1

[2]

Bulatov B.P., 1960, J NUCL ENERGY A, V11, P159

[3] THE ALBEDO OF VARIOUS MATERIALS FOR 1-MEV PHOTONS [J].

HAYWARD, E ;

HUBBELL, JH .

PHYSICAL REVIEW, 1954, 93 (05) :955-956

[4] BACKSCATTERING OF GAMMA RAYS [J].

HYODO, T .

NUCLEAR SCIENCE AND ENGINEERING, 1962, 12 (02) :178-&

[5] Z-DEPENDENCE OF SATURATION DEPTH FOR MULTIPLE BACKSCATTERING OF 662 KEV PHOTONS FROM THICK SAMPLES [J].

PARAMESH, L ;

VENKATARAMAIAH, P ;

GOPALA, K ;

SANJEEVIAH, H .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, 1983, 206 (1-2) :327-330

[6] BACK-SCATTERING OF LOW-ENERGY GAMMA RAYS [J].

POZDNEYE.DB .

JOURNAL OF NUCLEAR ENERGY, 1967, 21 (02) :197-+

[7] Response function of NaI(Tl) detectors and multiple backscattering of gamma rays in aluminium [J].

Sabharwal, Arvind D. ;

Singh, Manpreet ;

Singh, Bhajan ;

Sandhu, B. S. .

APPLIED RADIATION AND ISOTOPES, 2008, 66 (10) :1467-1473

[8] Investigations of multiple backscattering and albedos of 1.12 MeV gamma photons in elements and alloys [J].

Sabharwal, Arvind D. ;

Singh, Bhajan ;

Sandhu, B. S. .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2009, 267 (01) :151-156

[9] Effect of detector collimator and sample thickness on 0.662 MeV multiply Compton-scattered gamma rays [J].

Singh, M ;

Singh, G ;

Sandhu, BS ;

Singh, B .

APPLIED RADIATION AND ISOTOPES, 2006, 64 (03) :373-378

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