Method and apparatus for determining pressure-induced frequency-shifts in shock-compressed materials
Abstract
A method and an apparatus for conducting coherent anti-Stokes Raman scattering spectroscopy in shock-compressed materials are disclosed. The apparatus includes a sample vessel having an optically transparent wall and an opposing optically reflective wall. Two coherent laser beams, a pump beam and a broadband Stokes beam, are directed through the window and focused on a portion of the sample. In the preferred embodiment, a projectile is fired from a high-pressure gas gun to impact the outside of the reflective wall, generating a planar shock wave which travels through the sample toward the window. The pump and Stokes beams result in the emission from the shock-compressed sample of a coherent anti-Stokes beam, which is emitted toward the approaching reflective wall of the vessel and reflected back through the window. The anti-Stokes beam is folded into a spectrometer for frequency analysis. The results of such analysis are useful for determining chemical and physical phenomena which occur during the shock-compression of the sample.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 6679871
- Application Number:
- ON: DE84014313
- Assignee:
- Dept. of Energy
- 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:
- 42 ENGINEERING; IMPACT SHOCK; COMPRESSION; RAMAN SPECTRA; FREQUENCY ANALYSIS; DESIGN; MATERIALS; SPECTROSCOPY; SPECTRA; 420200* - Engineering- Facilities, Equipment, & Techniques; 420500 - Engineering- Materials Testing
Citation Formats
Moore, D S, and Schmidt, S C. Method and apparatus for determining pressure-induced frequency-shifts in shock-compressed materials. United States: N. p., 1983.
Web.
Moore, D S, & Schmidt, S C. Method and apparatus for determining pressure-induced frequency-shifts in shock-compressed materials. United States.
Moore, D S, and Schmidt, S C. Fri .
"Method and apparatus for determining pressure-induced frequency-shifts in shock-compressed materials". United States.
@article{osti_6679871,
title = {Method and apparatus for determining pressure-induced frequency-shifts in shock-compressed materials},
author = {Moore, D S and Schmidt, S C},
abstractNote = {A method and an apparatus for conducting coherent anti-Stokes Raman scattering spectroscopy in shock-compressed materials are disclosed. The apparatus includes a sample vessel having an optically transparent wall and an opposing optically reflective wall. Two coherent laser beams, a pump beam and a broadband Stokes beam, are directed through the window and focused on a portion of the sample. In the preferred embodiment, a projectile is fired from a high-pressure gas gun to impact the outside of the reflective wall, generating a planar shock wave which travels through the sample toward the window. The pump and Stokes beams result in the emission from the shock-compressed sample of a coherent anti-Stokes beam, which is emitted toward the approaching reflective wall of the vessel and reflected back through the window. The anti-Stokes beam is folded into a spectrometer for frequency analysis. The results of such analysis are useful for determining chemical and physical phenomena which occur during the shock-compression of the sample.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Dec 16 00:00:00 EST 1983},
month = {Fri Dec 16 00:00:00 EST 1983}
}