Controlling stimulated Raman scattering by two-color light in inertial confinement fusion

Z. J. Liu; Y. H. Chen; C. Y. Zheng; L. H. Cao; B. Li; J. Xiang; L. Hao; K. Lan

doi:10.1063/1.4995474

journal article Jul 24, 2017

Controlling stimulated Raman scattering by two-color light in inertial confinement fusion

Z. J. Liu

Y. H. Chen C. Y. Zheng

Physics of Plasmas Vol. 24 No. 8 · AIP Publishing

View at Publisher Save 10.1063/1.4995474

Abstract

A method is proposed to control the stimulated Raman scattering in the inertial confinement fusion by using auxiliary 2ω light to suppress the stimulated Raman scattering of the 3ω light. In this scheme, inverse bremsstrahlung absorption and parametric instabilities in the 2ω light increase the electron temperature and the plasma-density fluctuation, thus preventing the development of Raman scattering of the 3ω light. This scheme is successfully demonstrated by both one-dimensional kinetic simulations and two-dimensional radiative hydrodynamic simulations. The one-dimensional Vlasov results show that the time-averaged transmissivity of the 3ω light increases from 0.75 to 0.95 under certain conditions. Results obtained using the particle-in-cell method with Monte Carlo collisions show that the electron temperature is greatly increased with the increasing intensity of the 2ω light. The two-dimensional radiative hydrodynamic simulation results show that the electron temperature increases from 3.2 keV to 3.5 keV, and the time-averaged backscattering level decreases from 0.28 to 0.1 in the presence of the auxiliary 2ω light.

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References

Details

Published: Jul 24, 2017
Vol/Issue: 24(8)

Authors

Z

Z. J. Liu

Institute of Applied Physics and Computational Mathematics 1 , Beijing 100094, China; HEDPS, Center for Applied Physics and Technology, Peking University 2 , Beijing 100871, China

Y

Y. H. Chen

Institute of Applied Physics and Computational Mathematics 1 , Beijing 100094, China

C

C. Y. Zheng

Institute of Applied Physics and Computational Mathematics 1 , Beijing 100094, China; HEDPS, Center for Applied Physics and Technology, Peking University 2 , Beijing 100871, China; Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University 3 , Shanghai 200240, China

L

L. H. Cao

Institute of Applied Physics and Computational Mathematics 1 , Beijing 100094, China; HEDPS, Center for Applied Physics and Technology, Peking University 2 , Beijing 100871, China; Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University 3 , Shanghai 200240, China

B

B. Li

Institute of Applied Physics and Computational Mathematics 1 , Beijing 100094, China

J

J. Xiang

Institute of Applied Physics and Computational Mathematics 1 , Beijing 100094, China

L

L. Hao

Institute of Applied Physics and Computational Mathematics 1 , Beijing 100094, China

K

K. Lan

Institute of Applied Physics and Computational Mathematics 1 , Beijing 100094, China; HEDPS, Center for Applied Physics and Technology, Peking University 2 , Beijing 100871, China; Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University 3 , Shanghai 200240, China

Funding

National Natural Science Foundation of China Award: 11475030

National Basic Research Progra Award: 2013CB834101

Cite This Article

Z. J. Liu, Y. H. Chen, C. Y. Zheng, et al. (2017). Controlling stimulated Raman scattering by two-color light in inertial confinement fusion. Physics of Plasmas, 24(8). https://doi.org/10.1063/1.4995474

Controlling stimulated Raman scattering by two-color light in inertial confinement fusion

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