Dead-Time Measurement for Radiation Counters by Variance-to-Mean Method

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The variance-to-mean ratios of counts accumulated during a time-gate were measured as a function of gate width for several Geiger-Mueller(GM) and neutron proportional counters. The measured ratios asymptotically decreased with an increase in gate width. The ratio for a GM counter was saturated in about 400μs of gate width, while that for a neutron counter was done in about 40μs. Applying the first- and second-order formulae derived from the Muller's expression for the variance-to-mean ratio, the dead times of these counters were inferred from these saturated ratios. In the count-rate range above 1, 000cps for the GM counter and above 12, 000cps for the neutron counter, the dead times obtained by the first-order formula apparently depended on count rate. On the contrary, the application of the second-order formula sufficiently reduced the count-rate dependence. The dead times obtained by the second-order formula were consistent with those by the previous two-source or reactor-power variational methods.

収録刊行物

  • Journal of nuclear science and technology  

    Journal of nuclear science and technology 33(11), p.863-868, 1996-11-25 

    Atomic Energy Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002075831
  • 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
    4079956
  • 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  CJP引用  NDL  J-STAGE 
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