Energy and Momentum Deposition to Plasmas due to the Lower Hybrid Wave by a Finite Source
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概要
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Heating and current generation due to the lower hybrid wave are studied using the particle simulation. In contrast with previous work, where only the single mode is treated, main interests of this work are focused on the physical problems on a propagation cone consisting of many Fourier-expanded modes. It is found that the trajectory of the propagation cone is well described up to the lower hybrid resonance layer using both cold plasma approximation and the WKB method. An ion cross-field drift due to the ponderomotive force is observed. It is a main discovery that the modes in the higher side of the spectrum of the antenna play a key role for creation of the ion high energy tail. This process cannot be explained by the linear theory and is called the cascade process judging from the time variation of the damping of each mode. The particle model is significantly improved using the elongated grid and the quadric spatial interpolation. Many applications of this model to the simulations on other problems are expected to be very fruitful in the research of the plasma physics and nuclear fusion.
- 核融合科学研究所の論文
著者
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Abe Hirotada
Research Information Center Institute Of Plasma Physics Nagoya University:(present Address) Departme
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Itatani Ryohei
Research Information Center Institute Of Plasma Physics Nagoya University
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Nakajima Noriyoshi
Research Information Center, Institute of Plasma Physics, Nagoya University
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Nakajima Noriyoshi
Research Information Center Institute Of Plasma Physics Nagoya University
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