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Title: Raman Backscatter as a Remote Laser Power Sensor in High-Energy-Density Plasmas [Stimulated Scattering as a Remote Laser Power Sensor in High-Density and Temperature Plasmas]

Abstract

Stimulated Raman backscatter is used as a remote sensor to quantify the instantaneous laser power after transfer from outer to inner cones that cross in a National Ignition Facility (NIF) gas-filled hohlraum plasma. By matching stimulated Raman backscatter between a shot reducing outer versus a shot reducing inner power we infer that about half of the incident outer-cone power is transferred to inner cones, for the specific time and wavelength configuration studied. Furthermore, this is the first instantaneous nondisruptive measure of power transfer in an indirect drive NIF experiment using optical measurements.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1];  [3];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. LCLS Stanford, CA (United States)
  3. General Atomics, San Diego, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1377780
Alternate Identifier(s):
OSTI ID: 1103759
Report Number(s):
LLNL-JRNL-629872
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 111; Journal Issue: 2; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 70 PLASMA PHYSICS AND FUSION

Citation Formats

Moody, J. D., Strozzi, D. J., Divol, L., Michel, P., Robey, H. F., LePape, S., Ralph, J., Ross, J. S., Glenzer, S. H., Kirkwood, R. K., Landen, O. L., MacGowan, B. J., Nikroo, A., and Williams, E. A. Raman Backscatter as a Remote Laser Power Sensor in High-Energy-Density Plasmas [Stimulated Scattering as a Remote Laser Power Sensor in High-Density and Temperature Plasmas]. United States: N. p., 2013. Web. doi:10.1103/PhysRevLett.111.025001.
Moody, J. D., Strozzi, D. J., Divol, L., Michel, P., Robey, H. F., LePape, S., Ralph, J., Ross, J. S., Glenzer, S. H., Kirkwood, R. K., Landen, O. L., MacGowan, B. J., Nikroo, A., & Williams, E. A. Raman Backscatter as a Remote Laser Power Sensor in High-Energy-Density Plasmas [Stimulated Scattering as a Remote Laser Power Sensor in High-Density and Temperature Plasmas]. United States. doi:10.1103/PhysRevLett.111.025001.
Moody, J. D., Strozzi, D. J., Divol, L., Michel, P., Robey, H. F., LePape, S., Ralph, J., Ross, J. S., Glenzer, S. H., Kirkwood, R. K., Landen, O. L., MacGowan, B. J., Nikroo, A., and Williams, E. A. Tue . "Raman Backscatter as a Remote Laser Power Sensor in High-Energy-Density Plasmas [Stimulated Scattering as a Remote Laser Power Sensor in High-Density and Temperature Plasmas]". United States. doi:10.1103/PhysRevLett.111.025001. https://www.osti.gov/servlets/purl/1377780.
@article{osti_1377780,
title = {Raman Backscatter as a Remote Laser Power Sensor in High-Energy-Density Plasmas [Stimulated Scattering as a Remote Laser Power Sensor in High-Density and Temperature Plasmas]},
author = {Moody, J. D. and Strozzi, D. J. and Divol, L. and Michel, P. and Robey, H. F. and LePape, S. and Ralph, J. and Ross, J. S. and Glenzer, S. H. and Kirkwood, R. K. and Landen, O. L. and MacGowan, B. J. and Nikroo, A. and Williams, E. A.},
abstractNote = {Stimulated Raman backscatter is used as a remote sensor to quantify the instantaneous laser power after transfer from outer to inner cones that cross in a National Ignition Facility (NIF) gas-filled hohlraum plasma. By matching stimulated Raman backscatter between a shot reducing outer versus a shot reducing inner power we infer that about half of the incident outer-cone power is transferred to inner cones, for the specific time and wavelength configuration studied. Furthermore, this is the first instantaneous nondisruptive measure of power transfer in an indirect drive NIF experiment using optical measurements.},
doi = {10.1103/PhysRevLett.111.025001},
journal = {Physical Review Letters},
number = 2,
volume = 111,
place = {United States},
year = {2013},
month = {7}
}

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