Generating 10 GW-class isolated zeptosecond x-ray bursts through bootstrapping two plasma-based accelerator stages
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arXiv
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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866911159312973824 |
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| author | Ma, Qianyi Xia, Yuhui Wang, Zhenan Chen, Yuekai Liu, Letian Yang, Zhiyan Feng, Chao Xu, Xinlu Yan, Xueqing Joshi, Chan Mori, Warren B. |
| author_facet | Ma, Qianyi Xia, Yuhui Wang, Zhenan Chen, Yuekai Liu, Letian Yang, Zhiyan Feng, Chao Xu, Xinlu Yan, Xueqing Joshi, Chan Mori, Warren B. |
| contents | A method is proposed to generate coherent, intense zeptosecond x-ray pulses by using the electron beam produced by a laser wakefield accelerator (LWFA) stage as the driver for a beam driven plasma wakefield accelerator (PWFA) stage. The LWFA injector stage requires a readily available 100 TW laser driver to produce a GeV class self-injected electron beam. This beam is focused and used as the driver in a PWFA stage that utilizes a solid-density plasma with a modulated density downramp. The concept is shown to be capable of producing an ultra-short electron beam with unprecedented density ($10^{26}~\mathrm{cm^{-3}}$) and brightness ($ 10^{24}~\ampere/\meter^2/\radian ^2$), that is also pre-bunched on 0.1 Angstrom scales. By colliding this pre-bunched extreme beam with an optical undulator, an intense zeptosecond pulse can be emitted if the spatially focusing region is matched with the lasing region of the beam. Multi-dimensional particle-in-cell simulations are performed of the entire concept to demonstrate that an isolated 10 GW-class zeptosecond pulse with a full-width-half-maximum duration of 700 zs can be generated in a tapered laser pulse. Such an intense zeptosecond pulse generation scheme may provide an essential probe for nuclear physics and quantum electrodynamics processes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_13937 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Generating 10 GW-class isolated zeptosecond x-ray bursts through bootstrapping two plasma-based accelerator stages Ma, Qianyi Xia, Yuhui Wang, Zhenan Chen, Yuekai Liu, Letian Yang, Zhiyan Feng, Chao Xu, Xinlu Yan, Xueqing Joshi, Chan Mori, Warren B. Accelerator Physics Plasma Physics A method is proposed to generate coherent, intense zeptosecond x-ray pulses by using the electron beam produced by a laser wakefield accelerator (LWFA) stage as the driver for a beam driven plasma wakefield accelerator (PWFA) stage. The LWFA injector stage requires a readily available 100 TW laser driver to produce a GeV class self-injected electron beam. This beam is focused and used as the driver in a PWFA stage that utilizes a solid-density plasma with a modulated density downramp. The concept is shown to be capable of producing an ultra-short electron beam with unprecedented density ($10^{26}~\mathrm{cm^{-3}}$) and brightness ($ 10^{24}~\ampere/\meter^2/\radian ^2$), that is also pre-bunched on 0.1 Angstrom scales. By colliding this pre-bunched extreme beam with an optical undulator, an intense zeptosecond pulse can be emitted if the spatially focusing region is matched with the lasing region of the beam. Multi-dimensional particle-in-cell simulations are performed of the entire concept to demonstrate that an isolated 10 GW-class zeptosecond pulse with a full-width-half-maximum duration of 700 zs can be generated in a tapered laser pulse. Such an intense zeptosecond pulse generation scheme may provide an essential probe for nuclear physics and quantum electrodynamics processes. |
| title | Generating 10 GW-class isolated zeptosecond x-ray bursts through bootstrapping two plasma-based accelerator stages |
| topic | Accelerator Physics Plasma Physics |
| url | https://arxiv.org/abs/2509.13937 |