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A study of the effect of Al2O3 reflector on response function of NaI(Tl) detector

Research paper by Hoang Duc Tam, Huynh Dinh Chuong, Tran Thien Thanh, Chau Van Tao

Indexed on: 29 Mar '16Published on: 26 Mar '16Published in: Radiation Physics and Chemistry



Abstract

This study aims to assess the effect of Al2O3 reflector surrounding the NaI(Tl) crystal on the detector response function, based on Monte Carlo simulation, which can verify the precise model of the NaI(Tl) detector. The method used in determining the suitable thickness of Al2O3 reflector is to compare the calculated and experimental values of full-energy peak efficiency. The results show that the Al2O3 reflector should have a thickness of 0.8–1.2 mm for the maximum deviation between the experimental and simulated efficiency of 3.2% at all concerning energies. In addition, the obtained results are in good agreement with the response function of simulation and experimental spectra.

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