Isotope Separation of Argon by Axial Flow Turbo-Machine, (I)

DOI オープンアクセス
  • CHIBA Ren
    Department of Physics, Tokyo Institute of Technology
  • KAKUYA Eiryo
    Department of Physics, Tokyo Institute of Technology Mitsubishi Atomic Power Industries, Inc.
  • KANEKO Kumetaro
    Institute for Nuclear Study, University of Tokyo

書誌事項

タイトル別名
  • Isotope separation of argon by axial flow turbo-machine. I. Separation effect for molecular flow.
  • Separation Effect for Molecular Flow

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説明

The strong dependence on molecular weight shown by the compression ratio of a turbo-molecular pump for high vacuum suggests its possible utility for isotope separation. The separation factor obtainable with a multistage turbo-machine was estimated by means of a simplified calculation assuming molecular flow, and zero net throughput. The sepa-ration factor depends on the rotating speed of the pump, and attains maximum value when the speed of the blades is close to the most probable speed of the molecules.<BR>To study this effect experimentally, the separation factors were measured on Ar isotopes as a function of pressure and speed of rotation, using a turbo-molecular pump for high vacuum. The Ar gas was fed into the higher pressure side of the pump, to flow against the impeller action through the pump stages, and emerge on the lower-pressure side with its light component enriched. The abundance ratio between 36AT and 40Ar was measured to determine the separation factor. The measured values of separa-tion factor were 1.40, 1.65, 1.80 and 1.95 at 4, 500, 6, 000, 9, 000 and 12, 000 r.p.m., respectively, which were fairly close to the calculated data at low working pressures, but fell appre-ciably short of prediction as the pressure increased.

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詳細情報 詳細情報について

  • CRID
    1390001204097232384
  • NII論文ID
    130000829039
  • DOI
    10.3327/jnst.14.502
  • COI
    1:CAS:528:DyaE2sXltVyitr0%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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