Study of effective atomic number, hole diameter of the collimator and energy of radiation source on Buildup factor in material | ||
| Journal of Kufa - physics | ||
| Article 1, Volume 4, Issue 2, September 2012, Pages 9-17 | ||
| Author | ||
| S. H. Terar | ||
| Abstract | ||
| this work , gamma ray buildup factors in the materials of (Brass , copper , iron and aluminum) had been measured using the scintillation detector 3"×3" NaI(TI) and the radioactive sources Cs-137 & Co-60. The distance between the source and the detector was (41) cm . Two collimators were used with central holes of 1cm and 2cm diameters. Four factors affecting the buildup factor that had been studied and these are: The shielding thickness , The atomic number of the shield , The energy of the radioactive source and The hole diameter of the collimator. This study proved that gamma rays buildup factor in all materials increased with the increasing of shielding thickness and with the increase of the atomic number ,decreased with the increase of the energy of the radioactive source and increased the hole diameter of the collimator . | ||
| Keywords | ||
| effective atomic number; hole diameter; collimator and energy; radiation source; Buildup factor; material | ||
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