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Radiation Protection Dosimetry Advance Access originally published online on April 13, 2006
Radiation Protection Dosimetry 2006 121(3):317-320; doi:10.1093/rpd/ncl044
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Intensity of transmitted photon spectra as a function of transverse and longitudinal dimensions of soil medium using 137Cs

Gurdeep S. Sidhu, Tejbir Singh, Gurmel S. Mudahar and Parjit S. Singh*

Physics Department, Punjabi University, Patiala 147002, India

* Corresponding author: dr_parjit{at}hotmail.com

Received December 8, 2005, amended January 30, 2006, accepted March 17, 2006


  Abstract

Transmitted photon spectra (pulse-height distribution) of 137Cs gamma rays are measured through longitudinal and transverse dimensions of the soil medium. The intensity (photon fluence rate) of the multiple-scattered peak, appearing in the lower energy part of the spectrum, has been studied as a function of longitudinal as well as transverse thickness of the soil medium. The intensity of multiple-scatter peak decreases exponentially with the increase in longitudinal thickness of the soil medium, whereas a reverse trend of multiple-scatter peak intensity with transverse thickness occurs as the longitudinal dimension increases. The soil medium as a whole takes part in multiple scattering affecting the intensities of transmitted photons.


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