A Particle-in-Cell Simulation Framework for Thomson Scattering Analysis in Inertial Confinement Fusion
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866917287293878272 |
|---|---|
| author | Zhu, Ziang Liu, Yifan Li, Jun Wen, Han Cao, Shihui Shi, Yin Jia, Qing Chen, Chaoxin Liu, Yaoyuan Zhao, Hang Gong, Tao Li, Zhichao Yang, Dong Zheng, Jian |
| author_facet | Zhu, Ziang Liu, Yifan Li, Jun Wen, Han Cao, Shihui Shi, Yin Jia, Qing Chen, Chaoxin Liu, Yaoyuan Zhao, Hang Gong, Tao Li, Zhichao Yang, Dong Zheng, Jian |
| contents | In inertial confinement fusion (ICF), Thomson scattering (TS) is a widely used diagnostic technique for probing plasma conditions. We present a first-principles numerical approach to obtaining scattered light signals of ion acoustic features with high resolution in angle and frequency space using particle-in-cell simulations under typical ICF conditions. Our method demonstrates good agreement with existing theories for thermal collective TS. In the super-thermal collective regime, the results align with theory when the driven plasma modes are well-matched in wave vectors to the probe and collecting beams. Moreover, we also find that TS signals can remain significant even under imperfect wave-vector matching-a result that contradicts the conventional expectation that the TS spectrum strictly follows the plasma density spectrum. We attribute this discrepancy to a beating wave mechanism arising from the interaction between the probe beam and driven plasma density modulations. Our work thus provides a practical framework for interpreting TS signals from driven ion modes, a common yet complex feature in ICF plasmas. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_04298 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Particle-in-Cell Simulation Framework for Thomson Scattering Analysis in Inertial Confinement Fusion Zhu, Ziang Liu, Yifan Li, Jun Wen, Han Cao, Shihui Shi, Yin Jia, Qing Chen, Chaoxin Liu, Yaoyuan Zhao, Hang Gong, Tao Li, Zhichao Yang, Dong Zheng, Jian Plasma Physics In inertial confinement fusion (ICF), Thomson scattering (TS) is a widely used diagnostic technique for probing plasma conditions. We present a first-principles numerical approach to obtaining scattered light signals of ion acoustic features with high resolution in angle and frequency space using particle-in-cell simulations under typical ICF conditions. Our method demonstrates good agreement with existing theories for thermal collective TS. In the super-thermal collective regime, the results align with theory when the driven plasma modes are well-matched in wave vectors to the probe and collecting beams. Moreover, we also find that TS signals can remain significant even under imperfect wave-vector matching-a result that contradicts the conventional expectation that the TS spectrum strictly follows the plasma density spectrum. We attribute this discrepancy to a beating wave mechanism arising from the interaction between the probe beam and driven plasma density modulations. Our work thus provides a practical framework for interpreting TS signals from driven ion modes, a common yet complex feature in ICF plasmas. |
| title | A Particle-in-Cell Simulation Framework for Thomson Scattering Analysis in Inertial Confinement Fusion |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2510.04298 |