Investigation on γ-ray spectroscopy response and stability for CdZnTe detectors

Ya Dong Xu*, Wan Qi Jie, Yihui He, Gang Qiang Zha, Tao Wang, Jun Wang

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

γ-ray spectroscopy response for CdZnTe planar detector (10 mm×10 mm×2.5 mm) made by ourself is evaluated using an un-collimated 241Am (59.5 keV) radioactive source at room temperature for 10 h continuously, in which the polarization is not occurred. The γ-ray (59.5 keV) response spectra of the detector are acquired for a long time (1 year), it shows that operation of the detector is stable. A thick CdZnTe capacitive Frisch grid detector (10 mm×5 mm×10 mm) is fabricated in order to approach high collection efficiency for high-energy γ-rays. An excellent energy resolution of 3.65% for 137Cs at 662 keV is obtained without any additional signal processing.

Original languageEnglish (US)
Pages (from-to)331-334
Number of pages4
JournalGuangdianzi Jiguang/Journal of Optoelectronics Laser
Volume21
Issue number3
StatePublished - Mar 1 2010

Keywords

  • CdZnTe detector
  • Electron mobility life-time product
  • Polarization
  • γ-ray

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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