Shock temperature measurements of pre-compressed water using two-color streaked optical pyrometer

POSTER

Abstract

A coupling method of static pre-compression and laser-shock compression has been used to investigate off-Hugoniot states such as internal conditions of planets. This method has a possibility to generate lower temperature conditions than principal Hugoniot. In this work, shock temperature of a pre-compressed water has been experimentally obtained. We measured two-color emission from a shock wave driven into the pre-compressed water target using a streaked optical pyrometer. Using this method, it is possible to directly determine the shock temperature without any assumption of the emissivity of the shocked matter.

*This research was partially supported by grants for the Core-to-Core Program from the JSPS and for the GCOE program, ``Center for Electronic Devices Innovation,'' from the MEXT.

Authors

  • Akio Hirose

  • Tatsuya Jitsui

  • Tomoaki Kimura

  • Norimasa Ozaki

    • Graduate School of Engineering, Osaka University

  • Tomoyuki Terai

  • Tomokazu Sano

  • Kohei Miyanishi

  • Takashi Endo

  • Tomoyuki Kakeshita

  • Ryosuke Kodama

    • Grad. Sch. Engn., Osaka Univ.

  • Takuo Okuchi

    • Inst. for Study of The Earth's Interior, Okayama Univ.

  • Katsuya Shimizu

    • Center for Quantum Science and Technology under Extreme Conditions, Osaka Univ.

  • Takayoshi Sano

  • Youichi Sakawa

    • ILE, Osaka Univ.

  • Masahiro Ikoma

    • Grad. Sch. Sci. and Engn., Tokyo Inst. Tech.