Towards bright gamma-ray flash generation from tailored target irradiated by multi-petawatt laser

0566070 - FZÚ 2023 RIV DE eng J - Journal Article
Hadjisolomou, Prokopis - Jeong, Tae Moon - Bulanov, Sergey V.
Towards bright gamma-ray flash generation from tailored target irradiated by multi-petawatt laser.
Scientific Reports. Roč. 12, č. 1 (2022), č. článku 17143. ISSN 2045-2322. E-ISSN 2045-2322
R&D Projects: GA MŠMT EF15_003/0000449
Grant - others:OP VVV - HiFi(XE) CZ.02.1.01/0.0/0.0/15_003/0000449
Institutional support: RVO:68378271
Keywords : high-intensity * fast ions * acceleration * pulses * electrons * emission
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 4.6, year: 2022
Method of publishing: Open access

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 an amplified spontaneous emission pedestal 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 pedestal-target interaction into particle-in-cell simulations for describing the γ-photon generation. It is seen that target tailoring prior the laser-target interaction plays an important positive role, enhancing the efficiency of laser pulse coupling with the target, and generating high energy electron-positron pairs.
Permanent Link: https://hdl.handle.net/11104/0337508