Improvement of radiation response characteristic on CdTe detectors using fast neutron irradiation

被引：1

作者：

Miyamaru, H ^{[1
]}

IIda, T

Takahashi, A

机构：

[1] Osaka Univ, Grad Sch Engn, Dept Nucl Engn, Suita, Osaka 5650871, Japan

[2] Osaka Univ, Dept Elect Informat Syst & Energy Engn, Suita, Osaka 5650871, Japan

来源：

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY | 1999年 / 36卷 / 01期

关键词：

CdTe semiconductor detectors; fast neutrons; irradiation; radiation effects; risetime discrimination; energy resolution; charge carriers; carrier lifetime; carrier mobility; detector performance;

D O I：

10.1080/18811248.1999.9726181

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The treatment of fast neutron pre-irradiation was applied to a CdTe radiation detector in order to improve radiation response characteristic. Electron transport property of the detector was changed by the irradiation effect to suppress pulse amplitude fluctuation in risetime. Spectroscopic performance of the pre-irradiated detector was compared with the original. Additionally, the pre-irradiated detector was employed with a detection system using electrical signal processing of risetime discrimination (RTD). Pulse height spectra of Am-241, Ba-133, and Cs-137 gamma rays were measured to examine the change of the detector performance. The experimental results indicated that response characteristic for high-energy photons was improved Ly the pre-irradiation. The combination of the pl e-irradiated detector and the RTD processing was found to provide further enhancement of the energy resolution. Application of fast neutron irradiation effect to the CdTe detector was demonstrated.

引用

页码：54 / 60

页数：7

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