Modeling and experimental results of CdxZn1-xTe detector response

Michael Watson; Kaushik Chattopadhyay; Damian Hillman; Damon Hillman; Arnold Burger; Ralph B. James

doi:10.1117/12.407598

21 November 2000 Modeling and experimental results of Cd_xZn_1-xTe detector response

Michael Watson, Kaushik Chattopadhyay, Damian Hillman, Damon Hillman, Arnold Burger, Ralph B. James

Proceedings Volume 4141, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics II; (2000) https://doi.org/10.1117/12.407598
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

We have developed a model of the statistical variations in the electrical charge transport in CdxZn1-xTe(CZT) detectors. The model includes a simulation of the charge carrier generation for each photon interaction, using a calculated absorption coefficient of the photoelectric absorption. Next, we simulate the induced signal as carriers drift towards the collecting electrode under trapping conditions with negligible detrapping. Finally, a pulse height histogram is composed simulating the spectral response of the detector and incorporating the electronic noise component. A comparison between experimental and calculated CZT spectra was performed. These results and the potential for using the model in detector design will be discussed and presented.

Citation Download Citation

Michael Watson, Kaushik Chattopadhyay, Damian Hillman, Damon Hillman, Arnold Burger, and Ralph B. James "Modeling and experimental results of Cd_xZn_1-xTe detector response", Proc. SPIE 4141, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics II, (21 November 2000); https://doi.org/10.1117/12.407598

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