Hydrodynamics of foam cryogenic-deuterium target.

ORAL

Abstract

Hydrodynamic performance such as shock generation, compression, and target acceleration as well as energy transport including preheating of rear surface were investigated at Gekko-HIPER laser-irradiation system at ILE, Osaka. Cryogenic liquid deuterium target contained in a low-density plastic foam plane was irradiated with a 527-nm foot pulse and a 527-nm main-drive pulse. Hydrodynamics were well in good agreement with 1D simulations with Fokker-Planck electron transport. Rear surface temperature was found to be not significantly but slightly higher than the code prediction, indicating a possibility of target preheating due to energy transport that is not included in the code.

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Authors

  • Hiroyuki Shiraga

    • Institute of Laser Engineering, Osaka University

  • Mitsuo Nakai

  • T. Sakaiya

  • Hiroshi Azechi

    • ILE, Osaka University

  • K. Otani

  • Myongdok Lee

  • Kazuo Takeda

  • Atsushi Sunahara

    • Institute for Laser Technology

  • Hideo Nagatomo

    • Institute of Laser Engineering, Osaka University
    • ILE Osaka Univ.

  • Keiji Nagai

  • Takayasu Norimatsu

    • Institute of Laser Engineering, Osaka University

  • Akifumi Iwamoto

  • Toshiyuki Mito

    • National Institute for Fusion Science