Measurements of Pseudo-Decay-Constants of Trapped Neutrons in Small Graphite Systems at 77 and 194°K

DOI DOI
  • KAWAKITA Takashi
    Department of Nuclear Engineering, Faculty of Engineering, Osaka University Mitsubishi Atomic Power Industry
  • TAKAHASHI Akito
    Department of Nuclear Engineering, Faculty of Engineering, Osaka University

書誌事項

タイトル別名
  • Measurements of pseudo-decay-constants of trapped neutrons in small graphite systems at 77 and 194.DEG.K.

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説明

Neutron pulse die-away experiments for small graphite assemblies by using a pulsed "cold" neutron source technique were carried out for the purpose to measure the pseudo-decay-constants of trapped neutrons at the lowest Bragg-peak energy EB of coherent scattering in graphite, and also to estimate the temperature dependence of inelastic. scattering cross section of neutrons at EB. Experiments were carried out for 77 and 194°K graphite systems with dimensions from 40 x 40 x 40 cm3 to 30 x 30 x 20 cm3.<BR>The experimentally determined pseudo-decay-constants showed distinct temperature dependence and good agreement with the theoretical inelastic scattering cross sections by Young-Koppel model of phonon frequency distribution of graphite at these low temperatures.

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詳細情報 詳細情報について

  • CRID
    1390001204098431872
  • NII論文ID
    130000829397
  • DOI
    10.3327/jnst.13.555
    10.1080/18811248.1976.9734074
  • COI
    1:CAS:528:DyaE2sXkvVequg%3D%3D
  • ISSN
    18811248
    00223131
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • 抄録ライセンスフラグ
    使用不可

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