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arXiv · 2204.03378

Towards Bright Gamma-Ray Flash Generation From Tailored Target Irradiated by Multi-Petawatt Laser

Prokopis Hadjisolomou·Tae Moon Jeong·Sergei V. Bulanov
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Abstract

One of the remarkable phenomena in the laser-matter interaction is the extremely efficient energy transfer to $γ$-photons, that appears as a collimated $γ$-ray beam. For interactions of realistic laser pulses with matter, existence of a background field plays a crucial role, since it hits the target prior to the main pulse arrival, leading to a cloud of preplasma and drilling a narrow channel inside the target. These effects significantly alter the process of $γ$-photon generation. Here, we study this process by importing the outcome of magnetohydrodynamic simulations of the target interaction into particle-in-cell simulations for describing the $γ$-photon generation. It is seen that the background field effect plays an important positive role, enhancing the efficiency of laser pulse coupling with the target, and generating high energy electron-positron pairs. It is expected that such a $γ$-photon source will be actively used in various applications in nuclear photonics, material science and astrophysical processes modeling.

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Prokopis Hadjisolomou, Tae Moon Jeong, Sergei V. Bulanov. 2022-04-07. Towards Bright Gamma-Ray Flash Generation From Tailored Target Irradiated by Multi-Petawatt Laser. https://doi.org/10.1038/s41598-022-21352-8

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