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arXiv · 1907.10447

Peta-Pascal Pressure Driven by Fast Isochoric Heating with Multi-Picosecond Intense Laser Pulse

Kazuki Matsuo·Naoki Higashi·Natsumi Iwata·Shohei Sakata·Seungho Lee·Tomoyuki Johzaki·Hiroshi Sawada·Yuki Iwasa·King Fai Farley Law·Hiroki Morita·Yugo Ochiai·Sadaoki Kojima·Yuki Abe·Masayasu Hata·Takayoshi Sano·Hideo Nagatomo·Atsushi Sunahara·Alessio Morace·Akifumi Yogo·Mitsuo Nakai·Hitoshi Sakagami·Tetsuo Ozaki·Kohei Yamanoi·Takayoshi Norimatsu·Yoshiki Nakata·Shigeki Tokita·Junji Kawanaka·Hiroyuki Shiraga·Kunioki Mima·Hiroshi Azechi·Ryosuke Kodama·Yasunobu Arikawa·Yasuhiko Sentoku·Shinsuke Fujioka
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Abstract

Fast isochoric laser heating is a scheme to heat a matter with relativistic-intensity ($>$ 10$^{18}$ W/cm$^2$) laser pulse or X-ray free electron laser pulse. The fast isochoric laser heating has been studied for creating efficiently ultra-high-energy-density (UHED) state. We demonstrate an fast isochoric heating of an imploded dense plasma using a multi-picosecond kJ-class petawatt laser with an assistance of externally applied kilo-tesla magnetic fields for guiding fast electrons to the dense plasma.The UHED state with 2.2 Peta-Pascal is achieved experimentally with 4.6 kJ of total laser energy that is one order of magnitude lower than the energy used in the conventional implosion scheme. A two-dimensional particle-in-cell simulation reveals that diffusive heating from a laser-plasma interaction zone to the dense plasma plays an essential role to the efficient creation of the UHED state.

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Kazuki Matsuo, Naoki Higashi, Natsumi Iwata, Shohei Sakata, Seungho Lee, Tomoyuki Johzaki, Hiroshi Sawada, Yuki Iwasa, King Fai Farley Law, Hiroki Morita, Yugo Ochiai, Sadaoki Kojima, Yuki Abe, Masayasu Hata, Takayoshi Sano, Hideo Nagatomo, Atsushi Sunahara, Alessio Morace, Akifumi Yogo, Mitsuo Nakai, Hitoshi Sakagami, Tetsuo Ozaki, Kohei Yamanoi, Takayoshi Norimatsu, Yoshiki Nakata, Shigeki Tokita, Junji Kawanaka, Hiroyuki Shiraga, Kunioki Mima, Hiroshi Azechi, Ryosuke Kodama, Yasunobu Arikawa, Yasuhiko Sentoku, Shinsuke Fujioka. 2019-07-24. Peta-Pascal Pressure Driven by Fast Isochoric Heating with Multi-Picosecond Intense Laser Pulse. https://doi.org/10.1103/physrevlett.124.035001

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