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Title: Suppressing Two-Plasmon Decay with Laser Frequency Detuning

Journal Article · · Physical Review Letters
 [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

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.

Research Organization:
Univ. of Rochester, NY (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); New York State Energy Research and Development Authority (NYSERDA)
Grant/Contract Number:
NA0001944
OSTI ID:
1432355
Alternate ID(s):
OSTI ID: 1430560
Report Number(s):
2017-260; 1391; PRLTAO; 2017-260, 1391, 2349; TRN: US1802419
Journal Information:
Physical Review Letters, Vol. 120, Issue 13; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 32 works
Citation information provided by
Web of Science

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Cited By (6)

Wavelength-detuning cross-beam energy transfer mitigation scheme for direct drive: Modeling and evidence from National Ignition Facility implosions journal May 2018
Mitigation of cross-beam energy transfer in ignition-scale polar-direct-drive target designs for the National Ignition Facility journal July 2018
Resonance absorption of a broadband laser pulse journal December 2018
Thresholds of absolute instabilities driven by a broadband laser journal June 2019
Suppression of parametric instabilities in inhomogeneous plasma with multi-frequency light journal October 2019
The National Direct-Drive Inertial Confinement Fusion Program journal December 2018