Fast Numerical Calculation for a Set of Nonlinear Rate Equations: Application to Rapid Ionizaton Phase in Plasma
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概要
- 論文の詳細を見る
To make a useful contribution to the development of the compact X-ray laser, a modified quasi-steady-state approximation is applied to the fast numerical calculation of rate equations for the rapid ionization phase of a laser-produced plasma, to which the usual quasi-steady-state model by Bates et al. is not applicable. The set of nonlinear rate equations for the excited level populations coupled with the electron density and temperature for the plasma are numerically calculated with sufficient accuracy for their temporal evolution. The calculation also shows that a suitable combination is possible between the power and pulse width of a heating laser so that a high-density plasma can be obtained as the X-ray laser medium. The mathematical meaning of our approximation is briefly mentioned and its applicability is discussed.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2005-11-15
著者
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Oda Toshiatsu
Department Of Applied Physics And Chemistry Faculty Of Engineering Hiroshima University
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Takiyama Ken
Graduate School Of Engineering Hiroshima University
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Furukane Utaro
Department Of Bio-recyling Faculty Of Engineering Hiroshima Kokusai Gakuin University
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Namba Shinichi
Graduate School Of Engineering Hiroshima University
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Takiyama Ken
Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan
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Furukane Utaro
Department of Bio-Recyling, Faculty of Engineering, Hiroshima Kokusai Gakuin University, Hiroshima 739-0321, Japan
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Namba Shinichi
Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan
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Oda Toshiatsu
Department of Bio-Recyling, Faculty of Engineering, Hiroshima Kokusai Gakuin University, Hiroshima 739-0321, Japan
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