Electron acceleration and X-ray generation from near-critical-density carbon nanotube foams driven by moderately relativistic lasers
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arXiv
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| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| author | Pan, Zhuo Liu, Jianbo Wang, Pengjie Mei, Zhusong Cao, Zhengxuan Kong, Defeng Xu, Shirui Liu, Zhipeng Liang, Yulan Peng, Ziyang Xu, Tianqi Song, Tan Chen, Xun Wu, Qingfan Zhang, Yujia Han, Qihang Chen, Haoran Zhao, Jiarui Gao, Ying Chen, Shiyou Zhao, Yanying Yan, Xueqing Shou, Yinren Ma, Wenjun |
| author_facet | Pan, Zhuo Liu, Jianbo Wang, Pengjie Mei, Zhusong Cao, Zhengxuan Kong, Defeng Xu, Shirui Liu, Zhipeng Liang, Yulan Peng, Ziyang Xu, Tianqi Song, Tan Chen, Xun Wu, Qingfan Zhang, Yujia Han, Qihang Chen, Haoran Zhao, Jiarui Gao, Ying Chen, Shiyou Zhao, Yanying Yan, Xueqing Shou, Yinren Ma, Wenjun |
| contents | Direct laser acceleration of electrons in near-critical-density (NCD) carbon nanotube foams (CNFs) has its advantages in the high-efficiency generation of relativistic electrons and broadband X-rays. Here, we report the first simultaneous measurement on the spectra of laser-driven electrons and X-rays from CNFs at moderately relativistic intensities of around 5\times{10}^{19}\ W/cm^2.\ The density and thickness of the CNFs were scanned in the experiments, indicating the optimized electrons temperature of 5.5 MeV and X-ray critical energy of 5 keV. Two-dimensional (2D) particle-in-cell (PIC) simulations confirm that the electrons, with a temperature significantly higher than the pondermotive scale, are directly accelerated by the laser along the NCD plasma channel, while the bright X-rays are emitted by these electrons through betatron radiation or Thomson backscattering inside the channel. The simultaneously generated electrons and X-rays, automatically synchronized with the femtosecond laser driver, are suitable for applications such as bi-modal radiography. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_06862 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Electron acceleration and X-ray generation from near-critical-density carbon nanotube foams driven by moderately relativistic lasers Pan, Zhuo Liu, Jianbo Wang, Pengjie Mei, Zhusong Cao, Zhengxuan Kong, Defeng Xu, Shirui Liu, Zhipeng Liang, Yulan Peng, Ziyang Xu, Tianqi Song, Tan Chen, Xun Wu, Qingfan Zhang, Yujia Han, Qihang Chen, Haoran Zhao, Jiarui Gao, Ying Chen, Shiyou Zhao, Yanying Yan, Xueqing Shou, Yinren Ma, Wenjun Plasma Physics Accelerator Physics Direct laser acceleration of electrons in near-critical-density (NCD) carbon nanotube foams (CNFs) has its advantages in the high-efficiency generation of relativistic electrons and broadband X-rays. Here, we report the first simultaneous measurement on the spectra of laser-driven electrons and X-rays from CNFs at moderately relativistic intensities of around 5\times{10}^{19}\ W/cm^2.\ The density and thickness of the CNFs were scanned in the experiments, indicating the optimized electrons temperature of 5.5 MeV and X-ray critical energy of 5 keV. Two-dimensional (2D) particle-in-cell (PIC) simulations confirm that the electrons, with a temperature significantly higher than the pondermotive scale, are directly accelerated by the laser along the NCD plasma channel, while the bright X-rays are emitted by these electrons through betatron radiation or Thomson backscattering inside the channel. The simultaneously generated electrons and X-rays, automatically synchronized with the femtosecond laser driver, are suitable for applications such as bi-modal radiography. |
| title | Electron acceleration and X-ray generation from near-critical-density carbon nanotube foams driven by moderately relativistic lasers |
| topic | Plasma Physics Accelerator Physics |
| url | https://arxiv.org/abs/2404.06862 |