Numerical Simulation for Metastable States' Deexcitation in Electron Beam Evaporation Process

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A direct simulation Monte Carlo (DSMC) method was modified in order to analyze the evaporation process in atomic vapor laser isotope separation (AVLIS), whereby energy transfer between discrete energy levels of metastable states and continuous energy level of translation took place. The atomic excitation temperatures of gadolinium atom were calculated for the model in five low-lying states. Calculation results were compared with those of the experiments obtained by laser absorption spectroscopy. Two types of DSMC simulations which were different in inelastic collision procedures were carried out. It was concluded that the energy transfer was forbidden unless the total energy of the colliding atoms exceeded a threshold value. It was also found that the DSMC method is suitable for treating deexcitation of metastable states accompanied by rapid expansion in the AVLIS evaporation process.

収録刊行物

  • Journal of nuclear science and technology

    Journal of nuclear science and technology 32(9), 905-911, 1995-09-25

    Atomic Energy Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002073192
  • 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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