Effect of Fast Neutron Irradiation on CdTe Radiation Detectors

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概要

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• <BR>The influence of fast neutron irradiation was studied for CdTe radiation detectors in the range of fluence 1.0×108-1.8×1011n/cm2. The effect of γ-ray heavy irradiation toward the detector was also investigated for the comparison. Americium-241 and 137Cs γ-ray spectra measured before and after irradiation were compared to examine the change of the detector performance. A pulse height and a rise time of a radiation signal were simultaneously measured in order to evaluate the transport property of both electrons and holes. Peak shift toward lower energies was observed in the 241Am γ-ray spectrum after fast neutron irradiation. Electron μτ product showed large decrease with increasing the neutron fluence, while the one for holes remained unchanged. For the γ-ray irradiation, the spectrum shape of 137Cs changed due to the influence of carrier detrapping. Experimental results support that the electron-trapping center generated by fast neutrons degrades the detector performance of the CdTe detector.

• 社団法人 日本原子力学会の論文
• 1997-08-25

著者

• Iida T

  Nagoya Univ. Nagoya

• Iida Toshiyuki

  Department of Nuclear Engineering, Osaka University

• Iida Toshiyuki

  Department Of Nuclear Engineering Faculty Of Engineering Osaka University

• TAKAHASHI Akito

  Department of Nuclear Engineering, Graduate School of Osaka University

• Takahashi A

  Department Of Nuclear Engineering Graduate School Of Engineering Osaka University

• Takahashi Akito

  Department Of Nuclear Engineering Graduate School Of Osaka University

• Fujii Keiji

  Department Of Nuclear Engineering Graduate School Of Engineering Osaka University

• MIYAMARU Hiroyuki

  Department of Nuclear Engineering, Osaka University

• Miyamaru Hiroyuki

  Department Of Nuclear Engineering Graduate School Of Engineering Osaka University

• Iida Toshiyuki

  Department Of Electronic Information Systems And Energy Engineering Guraduate School Of Osaka Univer

• Takahashi Akito

  Department Of Nuclear Engineering Graduate School Of Engineering Osaka University

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