Two-plasmon-decay instability stimulated by dual laser beams in inertial confinement fusion
Two-plasmon-decay instability (TPD) poses a critical target preheating risk in direct-drive inertial confinement fusion. In this paper, TPD collectively driven by dual laser beams consisting of a normal-incidence laser beam (Beam-N) and a large-angle-incidence laser beam (Beam-L) is investigated via particle-in-cell simulations. It is found that significant TPD growth can develop in this regime at previously unexpected low laser intensities if the intensity of Beam-L exceeds the large-angle-incidence threshold. Both beams contribute to the growth of TPD in a “seed-amplification” manner in which the absolute instability driven by Beam-L provides the seeds that are convectively amplified by Beam-N, making TPD energetically important and causing significant pump depletion and hot-electron generation.
Authors
- Rui Yan (ORCID: https://orcid.org/0000-0002-2479-1260)
- L. F. Wang (ORCID: https://orcid.org/0000-0001-6359-8212)
- Jian Zheng (ORCID: https://orcid.org/0000-0001-8290-4772)
- Jun Li (ORCID: https://orcid.org/0000-0001-9247-0760)
- Yu Ji (ORCID: https://orcid.org/0000-0001-9529-1397)
- Yongkun Ding (ORCID: https://orcid.org/0000-0002-7927-7250)
- Chang-Wang Lian
Institutions
- University of Science and Technology of China (CN)
- Shanghai Jiao Tong University (CN)
- Institute of Applied Physics and Computational Mathematics (CN)
Publication Details
- Journal
- Matter and Radiation at Extremes
- Published
- 2024-12-23
- DOI
- https://doi.org/10.1063/5.0235643
- Citations
- 4
- Primary Topic
- Laser-Plasma Interactions and Diagnostics
- Type
- article
- Field-Weighted Citation Impact
- 2.64
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- University of Science and Technology of China
- Fundamental Research Funds for the Central Universities
- Science Challenge Project