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Single-Pulse Coherent Raman Spectroscopy in Shock-Compressed Benzene

Published online by Cambridge University Press:  21 February 2011

D. S. Moore ,
S. C. Schmidt ,
D. Schiferl  and
J. W. Shaner
D. S. Moore
Affiliation:
Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545;
S. C. Schmidt
Affiliation:
Dynamic Testing Division, Los Alamos National Laboratory, Los Alamos, NM 87545
D. Schiferl
Affiliation:
Dynamic Testing Division, Los Alamos National Laboratory, Los Alamos, NM 87545
J. W. Shaner
Affiliation:
Dynamic Testing Division, Los Alamos National Laboratory, Los Alamos, NM 87545
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Abstract

Single-pulse backwards stimulated Raman and reflected broadband coherent anti-Stokes Raman spectroscopy (BSRS and RBBCARS) have been used to measure the vibrational frequency shifts of the 992 cm−1 ring-stretching mode of liquid benzene shock-compressed to pressures up to 1.2 GPa. The resulting shifts of ∼7.5 cm−1/GPa in the dynamic experiments are compared to spontaneous Raman scattering measurements of heated samples compressed in a diamond-anvil cell. RBBCARS was used to simultaneously measure the ring-stretching mode vibrational frequencies of liquid benzene / liquid perdeuterobenzene mixtures shock-compressed to pressures up to 1.53 GPa. Additional experiments that demonstrate the difficulty of using polarization sensitive coherent Raman techniques, such as Raman-induced Kerr effect spectroscopy (RIKES), in shock-compressed samples are described.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 22: Symposium NY – High Pressure in Science and Technology , 1983 , 87
Copyright
Copyright © Materials Research Society 1984

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References

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