Magnetized fast isochoric laser heating for efficient creation of ultra-high-energy-density states

Shohei Sakata, Seungho Lee, Hiroki Morita, Tomoyuki Johzaki, Hiroshi Sawada, Yuki Iwasa, Kazuki Matsuo, King Fai Farley Law, Akira Yao, Masayasu Hata, Atsushi Sunahara, Sadaoki Kojima, Yuki Abe, Hidetaka Kishimoto, Aneez Syuhada, Takashi Shiroto, Alessio Morace, Akifumi Yogo, Natsumi Iwata, Mitsuo Nakai, Hitoshi Sakagami, Tetsuo Ozaki, Kohei Yamanoi, Takayoshi Norimatsu, Yoshiki Nakata, Shigeki Tokita, Noriaki Miyanaga, Junji Kawanaka, Hiroyuki Shiraga, Kunioki Mima, Hiroaki Nishimura, Mathieu Bailly-Grandvaux, João Jorge Santos, Hideo Nagatomo, Hiroshi Azechi, Ryosuke Kodama, Yasunobu Arikawa, Yasuhiko Sentoku and Shinsuke Fujioka ()
Additional contact information
Shohei Sakata: Osaka University
Seungho Lee: Osaka University
Hiroki Morita: Osaka University
Tomoyuki Johzaki: Hiroshima University
Hiroshi Sawada: Osaka University
Yuki Iwasa: Osaka University
Kazuki Matsuo: Osaka University
King Fai Farley Law: Osaka University
Akira Yao: Osaka University
Masayasu Hata: Osaka University
Atsushi Sunahara: Institute for Laser Technology
Sadaoki Kojima: Osaka University
Yuki Abe: Osaka University
Hidetaka Kishimoto: Osaka University
Aneez Syuhada: Osaka University
Takashi Shiroto: Tohoku University
Alessio Morace: Osaka University
Akifumi Yogo: Osaka University
Natsumi Iwata: Osaka University
Mitsuo Nakai: Osaka University
Hitoshi Sakagami: National Institutes of Natural Sciences
Tetsuo Ozaki: National Institutes of Natural Sciences
Kohei Yamanoi: Osaka University
Takayoshi Norimatsu: Osaka University
Yoshiki Nakata: Osaka University
Shigeki Tokita: Osaka University
Noriaki Miyanaga: Osaka University
Junji Kawanaka: Osaka University
Hiroyuki Shiraga: Osaka University
Kunioki Mima: Osaka University
Hiroaki Nishimura: Osaka University
Mathieu Bailly-Grandvaux: University of Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications)
João Jorge Santos: University of Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications)
Hideo Nagatomo: Osaka University
Hiroshi Azechi: Osaka University
Ryosuke Kodama: Osaka University
Yasunobu Arikawa: Osaka University
Yasuhiko Sentoku: Osaka University
Shinsuke Fujioka: Osaka University

Nature Communications, 2018, vol. 9, issue 1, 1-9

Abstract: Abstract Fast isochoric heating of a pre-compressed plasma core with a high-intensity short-pulse laser is an attractive and alternative approach to create ultra-high-energy-density states like those found in inertial confinement fusion (ICF) ignition sparks. Laser-produced relativistic electron beam (REB) deposits a part of kinetic energy in the core, and then the heated region becomes the hot spark to trigger the ignition. However, due to the inherent large angular spread of the produced REB, only a small portion of the REB collides with the core. Here, we demonstrate a factor-of-two enhancement of laser-to-core energy coupling with the magnetized fast isochoric heating. The method employs a magnetic field of hundreds of Tesla that is applied to the transport region from the REB generation zone to the core which results in guiding the REB along the magnetic field lines to the core. This scheme may provide more efficient energy coupling compared to the conventional ICF scheme.

Date: 2018
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DOI: 10.1038/s41467-018-06173-6

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