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

Abstract

One of the remarkable phenomena in the laser-matter interaction is the extremely efficient energy transfer to $\gamma$-photons, that appears as a collimated $\gamma$-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 $\gamma$-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 $\gamma$-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 $\gamma$-photon source will be actively used in various applications in nuclear photonics, material science and astrophysical processes modeling.

8 pages, 7 figures

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Cited by in corpus (5)

• All-optical nonlinear Breit-Wheeler pair production with $\gamma$-flash photons
• Gamma-Flash Generation in Multi-Petawatt Laser-Matter Interactions
• The Effect of Ultrastrong Magnetic Fields on Laser-Produced Gamma-Ray Flashes
• Attosecond gamma-ray flashes and electron-positron pairs in dyadic laser interaction with micro-wire
• Collimated $\gamma$-flash emission along the target surface irradiated by a laser at non-grazing incidence