Correlation between gamma photon emission and magnetic islands in laser-driven plasma channel
A recent theoretical study has identified a nontrivial magnetic island structure in a relativistic laser-driven plasma channel [Gong et al., Phys. Rev. Lett. 127, 165002 (2021)]. Here, we investigate the generation of gamma photons within a laser–plasma channel, focusing on the influence of magnetic islands on photon radiation characteristics. Particle-in-cell simulations show a strong correlation between the spatiotemporal structure of magnetic islands and the energy and density distribution of the emitted photons. High-energy photons are primarily emitted at the edges of magnetic islands, while low-energy photons are predominantly emitted between the islands. Furthermore, the laser carrier-envelope phase (CEP) plays a crucial role in modulating the spatiotemporal distribution of magnetic islands, which subsequently affects the spatial and angular distribution of the photon radiation. These findings highlight the potential of the magnetic island structures and the laser CEP control to shape photon radiation characteristics.
Authors
- Yinren Shou (ORCID: https://orcid.org/0000-0003-0843-1334)
- Xinlu Xu (ORCID: https://orcid.org/0000-0001-9247-151X)
- Guoqing Qiu
- Letian Liu
- Zheng Gong (ORCID: https://orcid.org/0000-0002-6272-1853)
- Xuezhi Wu (ORCID: https://orcid.org/0000-0003-0867-0597)
- Qianyi Ma (ORCID: https://orcid.org/0000-0002-6555-7446)
- Xueqing Yan (ORCID: https://orcid.org/0000-0002-2437-6577)
- Li Li (ORCID: https://orcid.org/0000-0003-3124-5281)
- Zhiyan Yang
- Jianxing Li (ORCID: https://orcid.org/0000-0001-5486-3133)
- Yu-Feng Zhou (ORCID: https://orcid.org/0009-0003-6066-7157)
- Dongchi Cai
Institutions
- Chinese Academy of Sciences (CN)
- Peking University (CN)
- International Centre for Theoretical Physics Asia-Pacific (CN)
- Institute for Basic Science (KR)
- Institute of Theoretical Physics (CN)
- Institute for Advanced Study (DE)
- University of Chinese Academy of Sciences (CN)
- State Key Laboratory of Nuclear Physics and Technology
- Xi'an Jiaotong University (CN)
Publication Details
- Journal
- Physics of Plasmas
- Published
- 2025-07-01
- DOI
- https://doi.org/10.1063/5.0270384
- Citations
- 2
- Primary Topic
- Laser-Plasma Interactions and Diagnostics
- Type
- article
- Field-Weighted Citation Impact
- 3.74
Funders
- Engineering and Physical Sciences Research Council
- National Science Fund for Distinguished Young Scholars