Calculations of Stopping Power, and Range of Ions Radiation (Alpha Particles) Interaction with Different Materials and Human Body Parts

M.O. El- Ghossain^1,

¹Department of Physics, The Islamic University of Gaza, Gaza, Palestine

Cite this paper:
M.O. El- Ghossain. Calculations of Stopping Power, and Range of Ions Radiation (Alpha Particles) Interaction with Different Materials and Human Body Parts. International Journal of Physics. 2017; 5(3):92-98. doi: 10.12691/ijp-5-3-5

Abstract

Radiation is naturally present in our environment and artificially in hospitals, both types of radiation interact with human body. In this work we studied interaction of Ions radiations and alpha particles with matter; we calculated the stopping power (in MeV cm2/g) and Range from the theory of Bethe-Bloch formula as giving in the reference. This has been done for different target materials in biological human body substances such as water, bone, muscle and tissue and at different energies of the ions. All these calculations were done using different programs; SRIM, STAR and Matlab, the results will be shown for Range Vs energy, and stopping power vs energy. Fitting model was employed using Matlab for water. Total stopping power was obtained by summing the electronic collisional and radioactive stopping power of the target materials, and then employing the continuous slowing down approximation (CSDA) to calculate the path length (Range). The total stopping power is proportional to Z², Z/A, and I, increases rapidly at low energies, reaches a maximum and decreases gradually with increasing energy.

Keywords:
stopping power range alpha particles dose human body Matlab

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