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Title: Suppressing Two-Plasmon Decay with Laser Frequency Detuning

Abstract

Three-dimensional laser-plasma interaction simulations show that laser frequency detuning by an amount achievable with current laser technology can be used to suppress the two-plasmon decay (TPD) instability and the corresponding hot-electron generation. For the plasma conditions and laser configuration in a direct-drive inertial confinement fusion implosion on the OMEGA laser, the simulations show that ~0.7% laser frequency detuning is sufficient to eliminate TPD-driven hot-electron generation in current experiments. In conclusion, this allows for higher ablation pressures in future implosion designs by using higher laser intensities.

Authors:
 [1];  [1];  [2];  [1];  [1];  [1]
  1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  2. Univ. of Alberta, Edmonton, AB (Canada). Dept. of Electrical and Computer Engineering
Publication Date:
Research Org.:
Univ. of Rochester, NY (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); New York State Energy Research and Development Authority (NYSERDA)
OSTI Identifier:
1432355
Alternate Identifier(s):
OSTI ID: 1430560
Report Number(s):
2017-260; 1391
Journal ID: ISSN 0031-9007; PRLTAO; 2017-260, 1391, 2349; TRN: US1802419
Grant/Contract Number:  
NA0001944
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 13; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; direct drive; intertial confinement fusion; laser-plasma interactions; plasma instabilities

Citation Formats

Follett, R. K., Shaw, J. G., Myatt, J. F., Palastro, J. P., Short, R. W., and Froula, D. H. Suppressing Two-Plasmon Decay with Laser Frequency Detuning. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.120.135005.
Follett, R. K., Shaw, J. G., Myatt, J. F., Palastro, J. P., Short, R. W., & Froula, D. H. Suppressing Two-Plasmon Decay with Laser Frequency Detuning. United States. doi:10.1103/PhysRevLett.120.135005.
Follett, R. K., Shaw, J. G., Myatt, J. F., Palastro, J. P., Short, R. W., and Froula, D. H. Fri . "Suppressing Two-Plasmon Decay with Laser Frequency Detuning". United States. doi:10.1103/PhysRevLett.120.135005. https://www.osti.gov/servlets/purl/1432355.
@article{osti_1432355,
title = {Suppressing Two-Plasmon Decay with Laser Frequency Detuning},
author = {Follett, R. K. and Shaw, J. G. and Myatt, J. F. and Palastro, J. P. and Short, R. W. and Froula, D. H.},
abstractNote = {Three-dimensional laser-plasma interaction simulations show that laser frequency detuning by an amount achievable with current laser technology can be used to suppress the two-plasmon decay (TPD) instability and the corresponding hot-electron generation. For the plasma conditions and laser configuration in a direct-drive inertial confinement fusion implosion on the OMEGA laser, the simulations show that ~0.7% laser frequency detuning is sufficient to eliminate TPD-driven hot-electron generation in current experiments. In conclusion, this allows for higher ablation pressures in future implosion designs by using higher laser intensities.},
doi = {10.1103/PhysRevLett.120.135005},
journal = {Physical Review Letters},
number = 13,
volume = 120,
place = {United States},
year = {2018},
month = {3}
}

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Cited by: 4 works
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