Optimum design of imploded core plasma for effective fast ignition at GXII
1 Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, Japan
2 Institute for Laser Technology, 2-6 Yamada-oka, Suita, Osaka, Japan
3 National Institute for Fusion Science, Toki 509-5202, Japan
4 Department of Physics, Nagoya University, Nagoya 464-8602, Japan
5 Graduate School for the Creation of New Photonics Industries Hamamatsu, Hamamatsu, Japan
a e-mail: email@example.com
Published online: 15 November 2013
In the implosion phase of the fast ignition scheme, most critical issues are breakup of the cone tip and the formation of high ρ-R core plasma to improve its heating efficiency. For the integrated fast ignition experiment at ILE Osaka University, robust and reliable implosion must be redesign. In this paper, feasible target design under the constraint condition of existing GXII and LFEX facilities is studied using two-dimensional radiation hydrodynamic simulations, and an optimum target design based on low velocity implosion is proposed. The advantages of low velocity implosion are low adiabat, robust against Rayleigh-Taylor instability, which are verified. Also longer life time of compressed core plasma which is preferable for fast ignition is confirmed in this study.
© Owned by the authors, published by EDP Sciences, 2013
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