Effect of Fast Neutron Irradiation on CdTe Radiation Detectors

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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.

収録刊行物

  • Journal of nuclear science and technology

    Journal of nuclear science and technology 34(8), 755-759, 1997-08-25

    Atomic Energy Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002077694
  • NII書誌ID(NCID)
    AA00703720
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00223131
  • NDL 記事登録ID
    4277721
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A460
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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