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Effect of collimator size and absorber thickness on gamma ray attenuation measurements for bakelite and perspex |
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| Authors: | Gurdeep S Sidhu Karamjit Singh Parjit S Singh Gurmel S Mudahar |
| Affiliation: | (1) Physics Department, Punjabi University, 147 002 Patiala, India |
| Abstract: | The mass attenuation coefficient (μ m) of 662 keV gamma rays have been measured in the extended media of bakelite and perspex under different collimation conditions. The increase in attenuation coefficient is seen with increase in sample thickness as well as with collimator size due to the contribution of multiple scattered photons in the uncollided beam of 662 keV gamma rays. |
| Keywords: | Attenuation coefficient narrow beam geometry multiple-scattered photons half acceptance angle |
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