Development of Railgun Pellet Injector Using a Laser-Induced Plasma Armature Results of Dummy Pellet Acceleration Tests

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著者

    • ONOZUKA Masanori
    • Advanced Technology Development Department, Mitsubishi Heavy Industries, Ltd.
    • ODA Yasushi
    • Advanced Technology Development Department, Mitsubishi Heavy Industries, Ltd.
    • AZUMA Kingo
    • Advanced Technology Development Department, Mitsubishi Heavy Industries, Ltd.
    • OGINO Mutsuo
    • Advanced Technology Development Department, Mitsubishi Heavy Industries, Ltd.

抄録

Using the low electric energy railgun system, dummy pellet acceleration tests have been conducted to investigate the application of the electromagnetic railgun system for high-speed pellet injection intofusion plasmas. The primary objective of the development is to improve the pellet acceleration efficiency and durability of the rail materials. In the system, the pellet is pre-accelerated before railgun acceleration. A laser beam is used to induce plasma armature. The ignited plasma armature is accelerated by an electromagnetic force that accelerates the pellet. As low electric energy was used, rail materials were used for multiple operations. Tungsten-alloy rail provided longer durability and slightly higher energy conversion coefficient than copper rail. The energy conversion coefficient was from 0.3 to 0.5% using a plastic insulator. A ceramic insulator improved the energy conversioncoefficient by 80%. The highest pellet velocity was 1.7km/s using wooden pellets accelerated by 1m-long railgun. Based on the findings, it is estimated that the hydrogen pellet has the potential to be accelerated to 5km/s using a 3m-long railgun.

収録刊行物

  • Journal of nuclear science and technology  

    Journal of nuclear science and technology 32(3), 226-236, 1995-03-25 

    Atomic Energy Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002072228
  • NII書誌ID(NCID)
    AA00703720
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00223131
  • データ提供元
    CJP書誌  J-STAGE 
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