High-Energy Photon Generation from Self-Organized Plasma Cavities in Field-Enhanced Laser-Preplasma Interactions
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866916887450877952 |
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| author | Hadjisolomou, Prokopis Shaisultanon, Rashid Jeong, Tae Moon Ridgers, Christopher Paul Bulanov, Sergei Vladimirovich |
| author_facet | Hadjisolomou, Prokopis Shaisultanon, Rashid Jeong, Tae Moon Ridgers, Christopher Paul Bulanov, Sergei Vladimirovich |
| contents | The interaction of an ultraintense Nd:glass laser pulse with a near-critical plasma self-organizes into a highly efficient $γ$-ray source. Three-dimensional particle-in-cell simulations demonstrate that relativistic self-focusing, aided by a self-generated electron cavity, enhances the laser intensity by more than an order of magnitude, driving the system into the radiation-reaction-dominated regime, i.e. one where the electrons lose a substantial amount of their energy as hard radiation. Peak photon emission occurs near $0.5$ times the relativistic critical density, with a $γ$-photon yield exceeding $20\%$ of the laser energy. Compared to Ti:Sa lasers of the same power, the longer duration of Nd:glass laser pulses leads to an order of magnitude increase in $γ$-photon number in the extreme conversion efficiency regime, making them particularly well-suited for photonuclear physics applications. These findings point to a robust and scalable mechanism for compact, ultra-bright $γ$-ray generation in the multi-petawatt regime. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2508_06045 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High-Energy Photon Generation from Self-Organized Plasma Cavities in Field-Enhanced Laser-Preplasma Interactions Hadjisolomou, Prokopis Shaisultanon, Rashid Jeong, Tae Moon Ridgers, Christopher Paul Bulanov, Sergei Vladimirovich Plasma Physics The interaction of an ultraintense Nd:glass laser pulse with a near-critical plasma self-organizes into a highly efficient $γ$-ray source. Three-dimensional particle-in-cell simulations demonstrate that relativistic self-focusing, aided by a self-generated electron cavity, enhances the laser intensity by more than an order of magnitude, driving the system into the radiation-reaction-dominated regime, i.e. one where the electrons lose a substantial amount of their energy as hard radiation. Peak photon emission occurs near $0.5$ times the relativistic critical density, with a $γ$-photon yield exceeding $20\%$ of the laser energy. Compared to Ti:Sa lasers of the same power, the longer duration of Nd:glass laser pulses leads to an order of magnitude increase in $γ$-photon number in the extreme conversion efficiency regime, making them particularly well-suited for photonuclear physics applications. These findings point to a robust and scalable mechanism for compact, ultra-bright $γ$-ray generation in the multi-petawatt regime. |
| title | High-Energy Photon Generation from Self-Organized Plasma Cavities in Field-Enhanced Laser-Preplasma Interactions |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2508.06045 |