Evaluation of neutron dose equivalent in pulsed and mixed radiation field around electron linear accelerator with rem-counter.

DOI 1 Citations Open Access
  • ODA Keiji
    The Institute of Scientific and Industrial Research, Osaka University Present address: Department of Nuclear Engineering, Kobe University of Mercantile Marine
  • KOYAMA Hiroshi
    The Institute of Scientific and Industrial Research, Osaka University Present address: Shimadzu Corp.
  • MUKAI Hidehito
    The Institute of Scientific and Industrial Research, Osaka University
  • YAMAMOTO Takayoshi
    The Institute of Scientific and Industrial Research, Osaka University
  • NAKAMURA Takashi
    Institute for Nuclear Study, University of Tokyo
  • KAWANISHI Masaharu
    The Institute of Scientific and Industrial Research, Osaka University

Bibliographic Information

Other Title
  • レムカウンターによる電子ライナック周辺のパルス混成放射線場における中性子線量当量評価

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Description

Two Important problems about commonly-used neutron rem-counter have been discussed in evaluating the neutron dose equivalent in pulsed and mixed radiation fields around an electron linear accelerator. One is the overestimate of dose equivalent due to false pulses generated by intense burst X-rays. In order to eliminate the false pulses, three techniques based on (1) anti-coincidence counting, (2) pulse height discrimination, and (3) correction factor have been employed. It was pointed out that the first technique was most effective and the third was most convenient for practical applications. The other problem is the underestimate of dose equivalent due to counting loss in a high-fluence-rate field. It was confirmed that the time variation of counting rate was an important factor for dead-time correction in pulsed radiation fields. A comparison between dose equivalent values evaluated with rem-counter and those with Indium activation detector has also been carried out. A validity of proposed correction methods was confirmed from the experimental results of the proportionality of the corrected dose equivalent values to the relative activity of Indium detectors.

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Details 詳細情報について

  • CRID
    1390001204288181888
  • NII Article ID
    130000793013
  • NII Book ID
    AN00228458
  • DOI
    10.5453/jhps.20.371
  • COI
    1:CAS:528:DyaL2sXjvF2jsg%3D%3D
  • ISSN
    18847560
    03676110
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • Abstract License Flag
    Disallowed

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