Cogeneration of hot electrons from multiple laser-plasma instabilities

S. H. Cao, R. Yan, H. Wen, J. Li, and C. Ren
Phys. Rev. E 101, 053205 – Published 21 May 2020

Abstract

Interactions of two-plasmon decay (TPD) and side-stimulated Raman scattering (SSRS) were studied using three-dimensional particle-in-cell simulations under inertial-confinement-fusion-relevant conditions for linearly and circularly polarized lasers. In the linear stage, SSRS took place under ne=0.235nc and TPD dominated near the quarter-critical density surface and their growth rates agreed with theory. In the nonlinear stage, SSRS reduced TPD through pump depletion. Hot electrons were found to be first accelerated by SSRS plasma waves and then by TPD plasma waves through a cogeneration mechanism. Compared to the linearly polarized case with the same laser intensity, both SSRS and TPD were reduced due to the lower laser amplitude in the circularly polarized case. As a result, a 30% decrease in hot electron flux was observed.

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  • Received 14 October 2019
  • Accepted 5 May 2020

DOI:https://doi.org/10.1103/PhysRevE.101.053205

©2020 American Physical Society

Physics Subject Headings (PhySH)

Plasma Physics

Authors & Affiliations

S. H. Cao1, R. Yan2,3, H. Wen4, J. Li5, and C. Ren1,4,6,*

  • 1Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627, USA
  • 2Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 3Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China
  • 4Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA
  • 5Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  • 6Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA

  • *chuang.ren@rochester.edu

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Vol. 101, Iss. 5 — May 2020

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