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Title: Frequency shift measurement in shock-compressed materials

Abstract

A method is disclosed for determining molecular vibrational frequencies in shock-compressed transparent materials. A single laser beam pulse is directed into a sample material while the material is shock-compressed from a direction opposite that of the incident laser beam. A Stokes beam produced by stimulated Raman scattering is emitted back along the path of the incident laser beam, that is, in the opposite direction to that of the incident laser beam. The Stokes beam is separated from the incident beam and its frequency measured. The difference in frequency between the Stokes beam and the incident beam is representative of the characteristic frequency of the Raman active mode of the sample. Both the incident beam and the Stokes beam pass perpendicularly through the stock front advancing through the sample, thereby minimizing adverse effects of refraction.

Inventors:
;
Issue Date:
OSTI Identifier:
6365630
Application Number:
ON: TI85006011
Assignee:
Dept. of Energy EDB-85-038592
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Resource Relation:
Other Information: Portions are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 42 ENGINEERING; LASER SPECTROSCOPY; MATERIALS TESTING; SHOCK WAVES; COMPRESSION; PULSED IRRADIATION; PULSES; RAMAN EFFECT; SPECTRAL SHIFT; STOKES LAW; IRRADIATION; SPECTROSCOPY; TESTING; 400104* - Spectral Procedures- (-1987); 420500 - Engineering- Materials Testing

Citation Formats

Moore, D.S., and Schmidt, S.C. Frequency shift measurement in shock-compressed materials. United States: N. p., 1984. Web.
Moore, D.S., & Schmidt, S.C. Frequency shift measurement in shock-compressed materials. United States.
Moore, D.S., and Schmidt, S.C. Tue . "Frequency shift measurement in shock-compressed materials". United States.
@article{osti_6365630,
title = {Frequency shift measurement in shock-compressed materials},
author = {Moore, D.S. and Schmidt, S.C.},
abstractNote = {A method is disclosed for determining molecular vibrational frequencies in shock-compressed transparent materials. A single laser beam pulse is directed into a sample material while the material is shock-compressed from a direction opposite that of the incident laser beam. A Stokes beam produced by stimulated Raman scattering is emitted back along the path of the incident laser beam, that is, in the opposite direction to that of the incident laser beam. The Stokes beam is separated from the incident beam and its frequency measured. The difference in frequency between the Stokes beam and the incident beam is representative of the characteristic frequency of the Raman active mode of the sample. Both the incident beam and the Stokes beam pass perpendicularly through the stock front advancing through the sample, thereby minimizing adverse effects of refraction.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {2}
}