Dynamics of Self-Generated Magnetic Fields in Stagnation Phase and their Effects on Hot Spark Formation
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概要
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The generalized temporal evolution equation of a magnetic field is derived for high density laser-fusion plasmas. Magnetic field generation and convection are simulated by using the 2D hydrodynamic code together with the magnetic field equation. It is found that magnetic fields are generated and compressed in association with the Rayleigh-Taylor instability of an imploding shell. In particular, the magnetic field convection by the Nernst effect is found to play an important role in the amplification of magnetic fields. The maximum magnetic field reaches 30 MG at maximum compression. This magnetic field may reduce the electron heat conduction around the hot spark. Therefore, it is concluded that the ignition condition for non-uniform implosion is influenced by self-generated magnetic fields.
- 社団法人 プラズマ・核融合学会の論文
著者
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Mima Kunioki
Institue Of Laser Engineering Osaka University
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Nagatomo Hideo
Institute Of Laser Engineering Osaka University
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NISHIGUCHI Akio
Osaka Institute of Technology
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HATA Akiro
Institute of Laser Engineering, Osaka University
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SUNAHARA Astushi
Institute of Laser Technology
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