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Title: Suppressing Two-Plasmon Decay with Laser Frequency Detuning

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.
 [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:
Report Number(s):
2017-260; 1391
Journal ID: ISSN 0031-9007; PRLTAO; 2017-260, 1391, 2349
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 13; Journal ID: ISSN 0031-9007
American Physical Society (APS)
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)
Country of Publication:
United States
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; direct drive; intertial confinement fusion; laser-plasma interactions; plasma instabilities
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1430560