Generation and Compression of Magnetic Field in Non-spherical cone-guided Implosion for Fast Ignition
POSTER
Abstract
In the recent computational simulation research suggest that magnetic field plays an important role in Fast Ignition scheme, especially for high energy electron transport toward the compressed core plasma. Non-spherical implosion can produce the strong magnetic field due to the cross production of grad(Te) and grad(ne). In our previous work, 2-D simulation code for temporal evolution of magnetic field has been developed, and it has been coupled with radiation hydrodynamic code as a postprocessor. In the simulation, we have found that Nernst effect is important in amplifying the field. Finally compressed magnetic field reaches 60MG at maximum compression time. In such strong magnetic field we cannot ignore the effect to the hot electron transport and reduction of thermal conduction which is strongly related to implosion dynamics. Therefore, magnetic field transport code is solved with 2-D radiation hydrodynamic code simultaneously when we investigate the effect to the implosion dynamics. \\[4pt] [1] H. Nagatomo, et. al, Phys. Plasmas, 14 056303 (2007).\\[0pt] [2] Nishiguchi et al., Phys. Fluid 28, 3683, (1985).
Authors
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Hideo Nagatomo
Institute of Laser Engineering, Osaka University
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Tomoyuki Johzaki
Hiroshima University
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Atsushi Sunahara
Institute for Laser Technology
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Hitoshi Sakagami
National Institute for Fusion Science, National Institute of Fusion Science
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Akio Nishiguchi
Osaka Institute of Technology
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Kunioki Mima
Graduate school for the Creation of New Photonics Industories, Institute of Laser Engineering, Osaka University