Simulation of a well-type HPGe detector for samples both in the hole and on top of the endcap

Yasuhiro Unno; Rio Furukawa; Akira Yunoki

doi:10.1016/j.apradiso.2017.02.011

Simulation of a well-type HPGe detector for samples both in the hole and on top of the endcap

Appl Radiat Isot. 2017 Aug:126:154-157. doi: 10.1016/j.apradiso.2017.02.011. Epub 2017 Feb 20.

Authors

Yasuhiro Unno¹, Rio Furukawa², Akira Yunoki²

Affiliations

¹ National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan. Electronic address: y.unno@aist.go.jp.
² National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan.

PMID: 28233596
DOI: 10.1016/j.apradiso.2017.02.011

Abstract

A well-type HPGe detector model with the existence of a particular dead area in the HPGe crystal was developed for use in Monte Carlo simulation codes to better model gamma-ray efficiency characteristics. Dissimilarities of counting efficiencies between simulation and calibration were successfully minimized for the case of point and volume sources. Simulations using the resulting model are applicable to the activity measurement of samples both in the hole and on top of the endcap of the well-type HPGe detector.

Keywords: Calibration; Dissimilarity; Gamma ray spectrometry; Model; Monte Carlo simulation; Well-type HPGe detector.