Generation of laser-induced plasma in supercritical water and vibrational spectroscopic study of accompanying stimulated Raman scattering

Hiroharu Yui, Takaaki Tomai, Masayoshi Sawada, Kazuo Terashima

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We have formed a laser-induced plasma (LIP) in supercritical water (SCW) and studied associated molecular vibrations using spectroscopic methods. The accompanying forward and backward stimulated Raman scattering (SRS) of water molecules showed anisotropic behavior at supercritical conditions (647 K and 22.1 MPa). The Raman shift of the backward SRS indicated that attractive interactions between water molecules and excess electrons generated by the LIP were dominant in the SCW. The backward SRS spectrum provided a microscopic view of the hydration environment around an excess electron, which is useful for controlling electron-driven chemical reactions and materials processing in SCW.

Original languageEnglish
Article number091504
JournalApplied Physics Letters
Volume99
Issue number9
DOIs
Publication statusPublished - 2011 Aug 29
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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