Ablation of a Deuterium Pellet in a Fusion Plasma Viewed as a Stopping Power Problem

C. T. Chang

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    At present, the most exploited technology to refuel a future fusion reactor is the high speed injection of macroscopic size pellet of solid hydrogen isotopes. The basic idea is that the ablation of a pellet in a fusion reactor is mainly caused by thermal electrons (~ 10 keV) /1/. Due to the low sublimation energy of hydrogen isotopes, shortly after the direct impact of the electrons, a dense cloud forms around the pellet. This cloud of ablated material then serves as a stopping medium for the incoming electrons, thus prolongs the pellet life-time. As a result, the deep penetration of the pellet into the reactor center becomes possible.
    Original languageEnglish
    JournalJOURNAL DE PHYSIQUE
    Volume44
    Issue numberNC-8
    Pages (from-to)17-23
    ISSN0302-0738
    DOIs
    Publication statusPublished - 1983

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