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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2411.05546 |
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| _version_ | 1866916473766674432 |
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| author | Sun, Fengyu Xie, Xinyu Wang, Wenpeng Weber, Stefan Zhang, Xin Leng, Yuxin Li, Ruxin Xu, Zhizhan |
| author_facet | Sun, Fengyu Xie, Xinyu Wang, Wenpeng Weber, Stefan Zhang, Xin Leng, Yuxin Li, Ruxin Xu, Zhizhan |
| contents | An isolated attosecond vortex $γ$-ray pulse is generated by using a relativistic spatiotemporal optical vortex (STOV) laser in particle-in-cell simulations. A $\sim$ 300-attosecond electron slice with transverse orbital angular momentum (TOAM) is initially selected and accelerated by the central spatiotemporal singularity of the STOV laser. This slice then collides with the laser's reflected Gaussian-like front from a planar target, initiating nonlinear Compton scattering and resulting in an isolated, attosecond ($\sim$ 300 as), highly collimated ($\sim$ 4$\degree$), ultra-brilliant ($\sim 5\times 10^{24}$ photons/s/mm$^2$/mrad$^2$/0.1\%BW at 1 MeV) $γ$-ray pulse. This STOV-driven approach overcomes the significant beam divergence and complex two-laser requirements of prior Gaussian-based methods while introducting TOAM to the attosecond $γ$-ray pulse, which opens avenues for ultrafast imaging, nuclear excitation, and detection applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_05546 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Isolated Attosecond $γ$-Ray Pulse Generation with Transverse Orbital Angular Momentum Using Intense Spatiotemporal Optical Vortex Lasers Sun, Fengyu Xie, Xinyu Wang, Wenpeng Weber, Stefan Zhang, Xin Leng, Yuxin Li, Ruxin Xu, Zhizhan Plasma Physics An isolated attosecond vortex $γ$-ray pulse is generated by using a relativistic spatiotemporal optical vortex (STOV) laser in particle-in-cell simulations. A $\sim$ 300-attosecond electron slice with transverse orbital angular momentum (TOAM) is initially selected and accelerated by the central spatiotemporal singularity of the STOV laser. This slice then collides with the laser's reflected Gaussian-like front from a planar target, initiating nonlinear Compton scattering and resulting in an isolated, attosecond ($\sim$ 300 as), highly collimated ($\sim$ 4$\degree$), ultra-brilliant ($\sim 5\times 10^{24}$ photons/s/mm$^2$/mrad$^2$/0.1\%BW at 1 MeV) $γ$-ray pulse. This STOV-driven approach overcomes the significant beam divergence and complex two-laser requirements of prior Gaussian-based methods while introducting TOAM to the attosecond $γ$-ray pulse, which opens avenues for ultrafast imaging, nuclear excitation, and detection applications. |
| title | Isolated Attosecond $γ$-Ray Pulse Generation with Transverse Orbital Angular Momentum Using Intense Spatiotemporal Optical Vortex Lasers |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2411.05546 |