Energy Transportation by MeV Hot Electrons in Fast Ignition Plasma Driven with LFEX PW Laser

Zhe ZHANG; Hiroaki NISHIMURA; Shinsuke FUJIOKA; Yasunobu ARIKAWA; Mitsuo NAKAI; Hideo NAGATOMO; Hiroyuki SHIRAGA; Sadaoki KOJIMA; Alessio MORACE; Noriaki MIYANAGA; Junji KAWANAKA; Yoshiki NAKATA; Takahisa JITSUNO; Hiroshi AZECHI; Tetsuo OZAKI; Hui CHEN; Jaebum PARK; Gerald Jackson WILLIAMS; Tomoyuki JOHZAKI; Atsushi SUNAHARA

doi:10.1585/pfr.9.1404118

Regular Articles

Energy Transportation by MeV Hot Electrons in Fast Ignition Plasma Driven with LFEX PW Laser

Zhe ZHANG, Hiroaki NISHIMURA, Shinsuke FUJIOKA, Yasunobu ARIKAWA, Mitsuo NAKAI, Hideo NAGATOMO, Hiroyuki SHIRAGA, Sadaoki KOJIMA, Alessio MORACE, Noriaki MIYANAGA, Junji KAWANAKA, Yoshiki NAKATA, Takahisa JITSUNO, Hiroshi AZECHI, Tetsuo OZAKI, Hui CHEN, Jaebum PARK, Gerald Jackson WILLIAMS, Tomoyuki JOHZAKI, Atsushi SUNAHARA

Author information

Zhe ZHANG
Institute of Laser Engineering, Osaka University
Hiroaki NISHIMURA
Institute of Laser Engineering, Osaka University
Shinsuke FUJIOKA
Institute of Laser Engineering, Osaka University
Yasunobu ARIKAWA
Institute of Laser Engineering, Osaka University
Mitsuo NAKAI
Institute of Laser Engineering, Osaka University
Hideo NAGATOMO
Institute of Laser Engineering, Osaka University
Hiroyuki SHIRAGA
Institute of Laser Engineering, Osaka University
Sadaoki KOJIMA
Institute of Laser Engineering, Osaka University
Alessio MORACE
Institute of Laser Engineering, Osaka University
Noriaki MIYANAGA
Institute of Laser Engineering, Osaka University
Junji KAWANAKA
Institute of Laser Engineering, Osaka University
Yoshiki NAKATA
Institute of Laser Engineering, Osaka University
Takahisa JITSUNO
Institute of Laser Engineering, Osaka University
Hiroshi AZECHI
Institute of Laser Engineering, Osaka University
Tetsuo OZAKI
National Institute for Fusion Science, LHD, High Temperature Plasma G.
Hui CHEN
Lawrence Livermore National Laboratory
Jaebum PARK
Lawrence Livermore National Laboratory
Gerald Jackson WILLIAMS
Lawrence Livermore National Laboratory
Tomoyuki JOHZAKI
The Graduate School of Engineering, Hiroshima University
Atsushi SUNAHARA
Institute for Laser Technology

Keywords: fast ignition, x-ray spectroscopy, laser transfer efficiency

JOURNAL FREE ACCESS

2014 Volume 9 Pages 1404118

DOI https://doi.org/10.1585/pfr.9.1404118

Details

Abstract

Implosion and heating experiments with the scheme of fast ignition (FI) have been performed on Gekko-XII and LFEX laser platform at the Institute of Laser Engineering in Osaka University. A cone-guided CD-shell has been used as a base-line target for the fast ignition realization. The information about energy transfer from LFEX petawatt (PW) laser is quantitatively studied with an absolute Kα diagnostics and a fast electron trajectory simulation. The transfer efficiency (η_TE) is estimated for a planar interaction as a reference and for several types of guiding-cone. As a general trend, the guiding-cone enhanced the η_TEby a factor of 3 comparing with the planar case.

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