Details

Autor(en) / Beteiligte

• MOHAMMADI, Akram
• BABA, Mamoru
• HIRAYAMA, Hideo

Titel

Simulation of the Carrier Trapping Effect in a Schottky CdTe Detector by Considering a Nonuniform Electric Field

Ist Teil von

• Journal of nuclear science and technology, 2009-11, Vol.46 (11), p.1032-1037

Ort / Verlag

Tokyo: Taylor & Francis Group

Erscheinungsjahr

2009

Quelle

Taylor & Francis Journals Auto-Holdings Collection

Beschreibungen/Notizen

• In order to simulate the low-energy tail in the response function of a Schottky CdTe detector, which is a high-resolution room temperature X- or γ-ray spectrometer, we introduced the effect of a nonuniform electric field within the detector to the response function by a Monte Carlo calculation using the EGS5 code. The simulated response functions were compared with measurements for γ-rays from 109 Cd, 241 Am, 133 Ba, and 57 Co sources. The present method successfully reproduced the low-energy tail due to the charge carrier trapping effect, while the conventional model assuming a uniform electric field underestimated the low-energy tail significantly, particularly for higher energy γ-rays.