Suppressing Two-Plasmon Decay with Laser Frequency Detuning

Follett, R. K.; Shaw, J. G.; Myatt, J. F.; Palastro, J. P.; Short, R. W.; Froula, D. H.

doi:10.1103/PhysRevLett.120.135005

Title: Suppressing Two-Plasmon Decay with Laser Frequency Detuning

Journal Article · 29 March 2018 · Physical Review Letters

DOI: https://doi.org/10.1103/PhysRevLett.120.135005 · OSTI ID:1432355

Follett, R. K. ^[1]; Shaw, J. G. ^[2]; Myatt, J. F. ^[3]; Palastro, J. P. ^[2]; Short, R. W. ^[2]; Froula, D. H. ^[2]

Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Laboratory for Laser Energetics, University of Rochester
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
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.

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Research Organization:: Univ. of Rochester, NY (United States)

Sponsoring Organization:: New York State Energy Research and Development Authority (NYSERDA); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0001944

OSTI ID:: 1432355

Report Number(s):: 1391; 2017--260; 2017-260, 1391, 2349

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 13 Vol. 120; ISSN 0031-9007; ISSN PRLTAO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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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 Marozas, J. A.; Hohenberger, M.; Rosenberg, M. J. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5022181	journal	May 2018
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Resonance absorption of a broadband laser pulse Palastro, J. P.; Shaw, J. G.; Follett, R. K. Physics of Plasmas, Vol. 25, Issue 12 https://doi.org/10.1063/1.5063589	journal	December 2018
Thresholds of absolute instabilities driven by a broadband laser Follett, R. K.; Shaw, J. G.; Myatt, J. F. Physics of Plasmas, Vol. 26, Issue 6 https://doi.org/10.1063/1.5098479	journal	June 2019
Suppression of parametric instabilities in inhomogeneous plasma with multi-frequency light Zhao, Yao; Weng, Suming; Sheng, Zhengming Plasma Physics and Controlled Fusion, Vol. 61, Issue 11 https://doi.org/10.1088/1361-6587/ab4691	journal	October 2019
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Title: Suppressing Two-Plasmon Decay with Laser Frequency Detuning

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