Articles written in Pramana – Journal of Physics
Volume 70 Issue 4 April 2008 pp 633-641 Research Articles
Attenuation studies near K-absorption edges using Compton scattered 241Am gamma rays
K K Abdullah N Ramachandran K Karunakaran Nair B R S Babu Antony Josephm Rajive Thomas K M Varier
We have carried out photon attenuation measurements at several energies in the range from 49.38 keV to 57.96 keV around the K-absorption edges of the rare earth elements Sm, Eu, Gd, Tb, Dy and Er using 59.54 keV gamma rays from 241Am source after Compton scattering from an aluminium target. Pellets of oxides of the rare earth elements were chosen as mixture absorbers in these investigations. A narrow beam good geometry set-up was used for the attenuation measurements. The scattered gamma rays were detected by an HPGe detector. The results are consistent with theoretical values derived from the XCOM package.
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