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Calculation of Gamma Ray Build up Factor for the Conical Beam Using Monte Carlo Method | ||
| Tikrit Journal of Pure Science | ||
| Article 1, Volume 11, Issue 1, 2006, Pages 164-172 | ||
| Author | ||
| Abstract | ||
| The number build up factor for conical beam of gamma rays from 137Cs is calculated by using Monte Carlo method for three different metals, Al, Fe & Pb. Fortran-77 language has been employed to write program which estimate the number build up factor by suggestion model describe the interaction and movement of the photons. This model mainly depends on the geometrical dimensions of the system and the slab type. The build up factor of 137Cs Gamma source was calculated by changing the distance between the detector and slab in the range (20-60)cm, changing the distance between the source and the slab in the range (10-25)cm, changing the collimated angles in the range (10º-58º), and changing the type and the thickness of the used slabs. A good agreement between the experimental and theoretical data calculation can see a for the slab thickness ≤ 4μχ, with an average percentage Deviation of 7.8, but for for slab thickness > 4μχ, the percentage Deviation increase from the above value. | ||
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