Generation of Ultra-Collimated Polarized Attosecond $γ-$Rays via Beam Instabilities
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910442175070208 |
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| author | Cui, Li-Jie Wei, Ke-Jia Lv, Chong Wan, Feng Salamin, Yousef I. Cao, Lei-Feng Li, Jian-Xing |
| author_facet | Cui, Li-Jie Wei, Ke-Jia Lv, Chong Wan, Feng Salamin, Yousef I. Cao, Lei-Feng Li, Jian-Xing |
| contents | Polarized attosecond $γ-$rays may offer excitation and hyperfine tracking of reactions relevant to nuclear physics, astrophysics, high-energy physics, etc. However, unfortunately, generation of a feasible and easy-to-deploy source is still a great challenge. Here, we put forward a novel method for producing ultra-collimated high-brilliance polarized attosecond $γ-$rays via the interaction of an unpolarized electron beam with a solid-density plasma. As a relativistic electron beam enters a solid-density plasma, it can be modulated into high-density clusters via the self-modulation instability of itself and further into attosecond slices due to its own hosing instability. This is accompanied by the generation of similar pulse-width $γ-$slices via nonlinear Compton scattering. The severe hosing instability breaks the symmetry of the excited electromagnetic fields, resulting in net linear polarization of $γ-$slices, which challenges the conventional perception that the interaction of an axially symmetric unpolarized electron beam with a uniform plasma cannot generate polarized radiation. In addition, we also obtain high-quality electron microbunches which may serve as an alternative source for prebunched free-electron lasers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_06426 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Generation of Ultra-Collimated Polarized Attosecond $γ-$Rays via Beam Instabilities Cui, Li-Jie Wei, Ke-Jia Lv, Chong Wan, Feng Salamin, Yousef I. Cao, Lei-Feng Li, Jian-Xing Plasma Physics Polarized attosecond $γ-$rays may offer excitation and hyperfine tracking of reactions relevant to nuclear physics, astrophysics, high-energy physics, etc. However, unfortunately, generation of a feasible and easy-to-deploy source is still a great challenge. Here, we put forward a novel method for producing ultra-collimated high-brilliance polarized attosecond $γ-$rays via the interaction of an unpolarized electron beam with a solid-density plasma. As a relativistic electron beam enters a solid-density plasma, it can be modulated into high-density clusters via the self-modulation instability of itself and further into attosecond slices due to its own hosing instability. This is accompanied by the generation of similar pulse-width $γ-$slices via nonlinear Compton scattering. The severe hosing instability breaks the symmetry of the excited electromagnetic fields, resulting in net linear polarization of $γ-$slices, which challenges the conventional perception that the interaction of an axially symmetric unpolarized electron beam with a uniform plasma cannot generate polarized radiation. In addition, we also obtain high-quality electron microbunches which may serve as an alternative source for prebunched free-electron lasers. |
| title | Generation of Ultra-Collimated Polarized Attosecond $γ-$Rays via Beam Instabilities |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2405.06426 |