Rescattering of stimulated Raman side scattering in nonuniform plasmas

Tan S.; Wang Q.; Chen Y.; Yao W. B.; Xiao C. Z.; Myatt J. F.

doi:10.1063/5.0206740

Volume 9 Issue 5

Sep. 2024

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Tan S., Wang Q., Chen Y., Yao W. B., Xiao C. Z., Myatt J. F.. Rescattering of stimulated Raman side scattering in nonuniform plasmas[J]. Matter and Radiation at Extremes, 2024, 9(5): 057402. doi: 10.1063/5.0206740

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Tan S., Wang Q., Chen Y., Yao W. B., Xiao C. Z., Myatt J. F.. Rescattering of stimulated Raman side scattering in nonuniform plasmas[J]. Matter and Radiation at Extremes, 2024, 9(5): 057402. doi: 10.1063/5.0206740

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Rescattering of stimulated Raman side scattering in nonuniform plasmas

doi: 10.1063/5.0206740

Tan S.^1
,,
Wang Q.^2
,,
Chen Y.^3
,,
Yao W. B.^1
,,
Xiao C. Z.^{1
,
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Myatt J. F.^4
,

1.
School of Physics and Electronics, Hunan University, Changsha 410082, China
2.
Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
3.
School of Electrical and Information Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
4.
Department of Electrical and Computer Engineering, University of Alberta, 9211 116 St. NW, Edmonton, Alberta T6G 1H9, Canada

More Information

Corresponding author: a)Author to whom correspondence should be addressed: xiaocz@hnu.edu.cn
Received Date: 2024-03-04
Accepted Date: 2024-07-09

Available Online: 2024-09-01

Publish Date: 2024-09-01

Abstract

Abstract

Rescattering of stimulated Raman side scattering (SRSS) is observed for the first time via two-dimensional (2D) particle-in-cell (PIC) simulations. We construct a theoretical model for the rescattering process, which can predict the region of occurrence of mth-order SRSS and estimate its threshold. The rescattering process is identified by the 2D PIC simulations under typical conditions of a direct-drive inertial confinement fusion scheme. Hot electrons produced by second-order SRSS propagate nearly perpendicular to the density gradient and gain nearly the same energy as in first-order SRSS, but there is no cascade acceleration to produce superhot electrons. Parametric studies for a wide range of ignition conditions show that SRSS and associated rescatterings are robust and important processes in inertial confinement fusion.

The authors have no conflicts to disclose.
Conflict of Interest
Author Contributions
S. Tan: Investigation (lead); Writing – original draft (lead). Q. Wang: Formal analysis (equal). Y. Chen: Formal analysis (equal); Investigation (equal). W. B. Yao: Investigation (equal). C. Z. Xiao: Conceptualization (lead); Writing – review & editing (equal). J. F. Myatt: Writing – review & editing (equal).
The data that support the findings of this study are available from the corresponding author upon reasonable request.

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References(46)

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