Hitoshi Sakagami
National Institutes of Natural Sciences, Japan
134 Papers
632 Citations
Hitoshi Sakagami is an academic researcher from National Institutes of Natural Sciences, Japan. The author has contributed to research in topics: Laser & Plasma. The author has an hindex of 23, co-authored 134 publications. Previous affiliations of Hitoshi Sakagami include Recruit & Nagoya University.
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Papers
Optimization of cone target geometry for fast ignition
Tatsufumi Nakamura,Hitoshi Sakagami,Tomoyuki Johzaki,Hideo Nagatomo,Kunioki Mima,James K. Koga +5 more
TL;DR: In this article, two parameters characterizing the laser-cone interaction are introduced, which are cone angle and the ratio of the laser spot size to the cone tip size, by changing these parameters, the energy absorption rate, laser irradiance at cone tip and side wall are controlled.
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Three-dimensional Rayleigh-Taylor instability of spherical systems.
TL;DR: A fully three-dimensional Rayleigh-Taylor instability of the pusher-fuel contact surface in a spherically stagnating system is investigated with the use of a new three- dimensional fluid code IMPACT-3D.
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14.9 TFLOPS Three-Dimensional Fluid Simulation for Fusion Science with HPF on the Earth Simulator
Hitoshi Sakagami,Hitoshi Murai,Yoshiki Seo,Mitsuo Yokokawa +3 more
- 16 Nov 2002
TL;DR: It is succeeded in getting 14.9 TFLOPS performance when running a plasma simulation code IMPACT-3D parallelized with High Performance Fortran on 512 nodes of the Earth Simulator.
Rayleigh--Taylor instability on the pusher--fuel contact surface of stagnating targets
TL;DR: In this article, the Rayleigh-Taylor instability on the pusher-fuel contact surface in the deceleration phase of implosion is investigated in cylindrical geometry using a two-dimensional fluid code.
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Control of an electron beam using strong magnetic field for efficient core heating in fast ignition
Tomoyuki Johzaki,Toshihiro Taguchi,Yasuhiko Sentoku,Atsushi Sunahara,Hideo Nagatomo,Hitoshi Sakagami,Kunioki Mima,Shinsuke Fujioka,H. Shiraga +8 more
TL;DR: In this article, the fast electron beam guiding using externally applied longitudinal magnetic fields was proposed for enhancing the core heating efficiency in electron-driven fast ignition. But the beam guiding performance in the collisional dense plasma was not evaluated.
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