Calculation and Study the Bremsstrahlung Dose rate of (90Sr) Beta Source

The bremsstrahlung dose rate for beta particles through four materials ( polyethylene, wood, aluminum and iron) were investigated as a function of the shielding material type, shield thickness and the shield to source distance. The bremsstrahlung dose rate were obtained using computer program called Rad Pro Calculator (version 3.26) with (90Sr) beta source having anmaximumenergy (0.546) MeV. Results show that the number of bremsstrahlung produced in the beta shield material increases as the atomic number of the material increases bremsstrahlung dose rate values decrease with increase of the thickness and shield to source distance.