Evaluation of the detection limit of net count in peak for the energy spectrum of CZT detector

Hirotaka Sakai; Taiki Yoshii; Fumiaki Takasaki; Jun Kawarabayashi

doi:10.1016/j.apradiso.2020.109569

Evaluation of the detection limit of net count in peak for the energy spectrum of CZT detector

Appl Radiat Isot. 2021 Mar:169:109569. doi: 10.1016/j.apradiso.2020.109569. Epub 2020 Dec 24.

Authors

Hirotaka Sakai¹, Taiki Yoshii², Fumiaki Takasaki³, Jun Kawarabayashi³

Affiliations

¹ Regulatory Standard and Research Department, Secretariat of Nuclear Regulation Authority (S/NRA/R), 1-9-9, Roppongi, Minato-ku, Tokyo, 106-8450, Japan. Electronic address: hirotaka_sakai@nsr.go.jp.
² Regulatory Standard and Research Department, Secretariat of Nuclear Regulation Authority (S/NRA/R), 1-9-9, Roppongi, Minato-ku, Tokyo, 106-8450, Japan.
³ Tokyo City University, 1-28-1 Tamazutsumi, Setagaya-ku, Tokyo, 158-8557, Japan.

PMID: 33387873
DOI: 10.1016/j.apradiso.2020.109569

Abstract

Pulse shape processing techniques have been used to improve the energy spectrum of the cadmium zinc telluride (CZT) detector, however, quantitative evaluation of the improvement, to determine whether it is acceptable to the related stakeholders, is required. In this study, the detection limit of net count in the full-energy absorption peak according to ISO 11929-1:2019 was selected to quantitatively evaluate the improvement of the characteristics of net count in the peak in the energy spectrum.

Keywords: CZT (CdZnTe) semiconductor detector; Detection limit; ISO 11929; Pulse shape processing; Uncertainty in measurement.