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(IF/6) Ultra-Intense Laser Plasma Interactions Related to Fast Ignitor in Inertial Confinement Fusion

R. Kodama, H. Fujita, N. Izumi, T. Kanabe, Y. Kato¹, Y. Kitagawa, Y. Sentoku, S. Nakai, M. Nakatsuka, T. Norimatsu, K. Takahashi, K. A. Tanaka, T. Yamanaka and K. Mima

Institute of Laser Engineering, Osaka University, Osaka, Japan
¹ present address: Advanced Photon research Center, Kansai Research Establishment, Japan Atomic Energy Research Insitute Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan

C. Yamanaka

Institute for Laser Technology, Osaka, Japan

Abstract.  We experimentally studied laser-hole boring with 100 ps /1TW laser light and ultra-intense laser-plasma interactions by using a 0.5-1ps/100TW laser system. Formation of laser-channel into a overdense region was investigated in a long scale-length plasma created on a plane target by measurements of back-scatter light spectra, x-ray image and electron density profiles in under and overdense regions. Taking into account these experimental results, laser-hole boring was tested in implosion plasmas. We also examined generation of high energy particles as well as ultra-intense laser interactions by using 100 TW laser light and a particle-in cell code.

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