TIME-RESOLVED SPECTROSCOPIC OBSERVATIONS OF SHOCK-INDUCED SILICATE IONIZATION

被引：5

作者：

Kurosawa, K. ^{[1
]}

Kadono, T. ^{[1
]}

Sugita, S. ^{[1
]}

Shigemori, K. ^{[1
]}

Hironaka, Y. ^{[1
]}

Sano, T. ^{[1
]}

Sakaiya, T. ^{[1
]}

Ozaki, N. ^{[1
]}

Shiroshita, A. ^{[1
]}

Ohno, S. ^{[1
]}

Cho, Y. ^{[1
]}

Hamura, T. ^{[1
]}

Fujioka, S. ^{[1
]}

Tachibana, S. ^{[1
]}

Vinci, T. ^{[1
]}

Kodama, R. ^{[1
]}

Matsui, T. ^{[1
]}

机构：

[1] Japan Aerosp & Explorat Agcy, Inst Space & Astronaut Sci, Kanagawa, Japan

来源：

SHOCK COMPRESSION OF CONDENSED MATTER - 2011, PTS 1 AND 2 | 2012年 / 1426卷

基金：

日本学术振兴会;

关键词：

Meteoritic impacts; EOS for silicates; Vaporization/Ionization; Spectroscopy; Laser shock; EQUATION-OF-STATE; SIMULATIONS; IMPACT;

D O I：

10.1063/1.3686412

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We conducted time-resolved spectroscopic observations of shock-heated quartz and forsterite using a high-power laser. The results revealed that ionization occur easily under shock-induced warm dense conditions. We compare the obtained temperatures on the Hugoniot with a few theories. The comparison suggests that the contribution of shock-induced ionization to the isochoric specific heat during shock compression is similar to 1 k(b)/atom for quartz and forsterite. Shock-induced ionization and subsequent electron recombination leads to a larger amount of vapor and may lead to dynamical and chemical evolution of silicate vapor clouds different from our current understandings.

引用

页数：4

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