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Multiple-scatter peak; transmitted photon spectra; radioisotopes

The transmitted photon spectra of¹³³Ba,²²Na,¹³⁷Cs,⁵⁴Mn and⁶⁰Co point sources are measured through different thicknesses of water, concrete and sand. The multiple-scatter peaks observed in these materials at 60, 90 and 100 keV energies respectively are found to be independent of incident photon energy and thickness of the medium.

G S Bhandal¹ Vijay Kumar¹ Rama Rani¹ K A Waldeep¹ K Singh¹

1. Radiation Physics Lab., Department of Physics, Guru Nanak Dev University, Amritsar - 143 005, India

Published

April 1994

Manuscript received

20 September 1993

Manuscript revised

29 January 1994