Development of a model for gamma-ray spectra generation using pixelated mercuric iodide detectors

James E. Baciak; Zhong He

doi:10.1117/12.455979

10 January 2003 Development of a model for gamma-ray spectra generation using pixelated mercuric iodide detectors

James E. Baciak, Zhong He

Proceedings Volume 4784, X-Ray and Gamma-Ray Detectors and Applications IV; (2003) https://doi.org/10.1117/12.455979
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Recent studies have shown that pixelated HgI₂ detectors with a thickness of 1 cm can yield energy resolutions of 1.4 - 2% FWHM at 662 keV γ-ray energy, which are similar to that obtained on 3-dimensional position sensitive CdZnTe detectors of the same thickness. However, there is a need to better understand the electron transportation and induced charge from the drift of charges within the detector in order to better understand the spectra obtained from HgI₂ detectors. The results of a simple simulation model accounting for electron trapping and various weighting potentials is compared with recent physical spectra obtained from pixelated HgI₂ detectors of 5 mm and 10 mm thickness.

Citation Download Citation

James E. Baciak and Zhong He "Development of a model for gamma-ray spectra generation using pixelated mercuric iodide detectors", Proc. SPIE 4784, X-Ray and Gamma-Ray Detectors and Applications IV, (10 January 2003); https://doi.org/10.1117/12.455979

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