Laser-shock compression of liquid hydrogen and the interior structure of gas giant planets

POSTER

Abstract

Equation of state for hydrogen under high pressure is a key to understand the interior structure of gas giant planets like Jupiter. Uncertainty in the hydrogen EOS makes it difficult to estimate the mass of a central core in Jupiter, which can be an important clue to determine the formation scenario of our solar system. To obtain a more accurate EOS model, we have started to investigate the primary Hugoniot of liquid hydrogen by using the GEKKO XII laser. We adopt $\alpha$-quartz as a standard material. Shock velocities in quartz and a sample are measured by VISAR. In this paper, we show the current status of our experiment and future plan.

Authors

  • Takayoshi Sano

    • Osaka University

  • Masahiro Ikoma

  • Keisuke Shigemori

  • Norimasa Ozaki

  • Takashi Endo

  • Yoichiro Hironaka

  • Yasunori Hori

  • Akifumi Iwamoto

  • Toshihiko Kadono

  • Tomoaki Kimura

  • Ryosuke Kodama

  • Kohei Miyanishi

  • Mitsuo Nakai

  • Takuo Okuchi

  • Kazuto Otani

  • Tatsuhiro Sakaiya

  • Katsuya Shimizu

  • Akiyuki Shiroshita

  • Hideki Takahashi