Study of CdTe detector response functions using different MCNPX computational modeling detailing

A. M. Antunes; B. M. Mendes; P. L. Squair; M. S. Nogueira; A. T. Almeida-Jr; M. A. S. Lacerda

doi:10.15392/2319-0612.2024.2497

Authors

A. M. Antunes Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN)
B. M. Mendes Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN)
P. L. Squair Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN)
M. S. Nogueira Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN)
A. T. Almeida-Jr Fundação Jorge Duprat Figueiredo de Segurança e Medicina do Trabalho
M. A. S. Lacerda Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN)

DOI:

https://doi.org/10.15392/2319-0612.2024.2497

Keywords:

X-ray spectra, Response Function, CdTe detector, MCNPX

Abstract

The spectra measured with cadmium telluride (CdTe) detectors show high spectral distortions that must be corrected by applying a mathematical algorithm along with the detector's response functions. Simplified computational modeling of the CdTe detector is generally used to obtain its response functions. In this work, the Monte Carlo code MCNPX was used to study the response functions of a CdTe detector using more complex detector modeling and compared it with those obtained by simplified modeling. Raw spectra were corrected using the response matrices obtained for the simplified and detailed modeling of the CdTe and compared with those obtained with reference-validated software.

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Author Biography

M. A. S. Lacerda, Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN)

Possui graduação em Engenharia Civil pela Universidade Federal de Ouro Preto (UFOP-1999), mestrado em Ciências e Técnicas Nucleares pela Universidade Federal de Minas Gerais (UFMG-2002) e doutorado em Tecnologias Energéticas e Nucleares pela Universidade Federal de Pernambuco (UFPE-2007). Atualmente é Pesquisador Titular do Centro de Desenvolvimento da Tecnologia Nuclear da Comissão Nacional de Energia Nuclear (CDTN/CNEN). Desenvolve pesquisas na área de Física Médica e Engenharia Nuclear com ênfase nos seguintes temas: Metrologia das Radiações, Método de Monte Carlo aplicado à Dosimetria das Radiações Ionizantes, Radioproteção.

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