K
Kunioki Mima
Researcher at Osaka University
Publications - 94
Citations - 1574
Kunioki Mima is an academic researcher from Osaka University. The author has contributed to research in topics: Laser & Plasma. The author has an hindex of 21, co-authored 94 publications receiving 1455 citations. Previous affiliations of Kunioki Mima include Southeast University & Setsunan University.
Papers
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Journal ArticleDOI
Anomalous resistivity resulting from MeV-electron transport in overdense plasma.
TL;DR: Laser produced hot electron transport in an overdense plasma is studied by three-dimensional particle-in-cell simulations, leading to a configuration which is unstable to electromagnetic Weibel and tearing instabilities.
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Surface-magnetic-field and fast-electron current-layer formation by ultraintense laser irradiation.
TL;DR: This Letter discloses a unique feature of relativistic electron motion and self-induced electromagnetic fields which depend upon laser incident angle and intensity.
Journal ArticleDOI
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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10-kJ PW laser for the FIREX-I program
N. Miyanaga,Hiroshi Azechi,K. A. Tanaka,T. Kanabe,Takahisa Jitsuno,J. Kawanaka,Yasushi Fujimoto,Ryosuke Kodama,Hiroyuki Shiraga,K. Knodo,Koji Tsubakimoto,Hideaki Habara,J. Lu,Guang Xu,N. Morio,S. Matsuo,E. Miyaji,Yoichi Kawakami,Y. Izawa,Kunioki Mima +19 more
TL;DR: A 10kJ PW laser (LFEX) is under construction for the FIREX-I program as discussed by the authors, with a modified four-pass architecture, wavefront correction, a large-aperture Faraday rotator with a superconducting magnet, and a new pulse compressor arrangement.
Journal ArticleDOI
Boosting laser-ion acceleration with multi-picosecond pulses
Akifumi Yogo,Kunioki Mima,N. Iwata,S. Tosaki,Alessio Morace,Yasunobu Arikawa,Shinsuke Fujioka,Tomoyuki Johzaki,Yasuhiko Sentoku,Hiroaki Nishimura,Akito Sagisaka,Kazuki Matsuo,N. Kamitsukasa,Sadaoki Kojima,Hideo Nagatomo,Mitsuo Nakai,H. Shiraga,Masakatsu Murakami,Shigeki Tokita,J. Kawanaka,N. Miyanaga,Kohei Yamanoi,Takayoshi Norimatsu,Hitoshi Sakagami,Sergei V. Bulanov,Kiminori Kondo,Hiroshi Azechi +26 more
TL;DR: Using one of the world most powerful laser facility, it is demonstrated for the first time that high-contrast multi-picosecond pulses are advantageous for proton acceleration and laser-energy conversion efficiency into the MeV protons is enhanced with an order of magnitude.