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S8-6 · Holistic Simulation for FIREX Project with FI³

T. Johzaki¹, H. Sakagami², H. Nagatomo¹, K. Mima<sup>1

1</sup>Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan
²Theory and Computer Simulation Center, National Institute for Fusion Science, Toki 509-5292, Japan

Abstract: understand and identify the crucial physics in the fast heating, we developed the fast ignition interconnected integrated code FI³ and carried out the core heating simulations for fast heating experiments with cone-guided targets. It was found that the scale length of the pre-plasma at the inner-surface of the cone and the density gap at the contact surface between the cone tip and the imploded core plasma strongly affect efficiency of core heating. When the heating laser is 10²⁰W/cm² and 1ps, the pre-plasma scale length of 1.5μm is optimum for the core heating. In this case, the dense core is heated up to 0.86keV. In the double scale length case (long scale of ~5μm in underdense region and short scale of ~ 1μm in overdense region), which is observed at the radiation –hydro simulations for low intensity laser-plasma interactions, the dense core is heated more efficiently than single short scale length cases. The contribution of fast ions to the core heating is also discussed.

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