Gamma-Ray Flash Generation in Irradiating Thin Foil Target by Single Cycle Tightly Focused Extreme Power Laser Pulse
| Autor: | Hadjisolomou, Prokopis, Jeong, Tae Moon, Valenta, Petr, Korn, Georg, Bulanov, Sergei |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Phys. Rev. E 104, 015203 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevE.104.015203 |
| Popis: | We present a regime where an ultra-intense laser pulse interacting with a foil target results in high $\gamma$-photon conversion efficiency, obtained via three-dimensional quantum-electrodynamics particle-in-cell simulations. A single-cycle laser pulse is used under the tight-focusing condition for obtaining the $\mathrm{\lambda}^3$ regime. The simulations employ a radially polarized laser as it results in higher $\gamma$-photon conversion efficiency compared to both azimuthal and linear polarizations. A significant fraction of the laser energy is transferred to positrons, while a part of the electromagnetic wave escapes the target as attosecond single-cycle pulses. Comment: 6 pages, 5 figures |
| Databáze: | arXiv |
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