ORCID
- King, B.: 0000-0003-4489-8468
Abstract
AbstractWhen a photon collides with a laser pulse, an electron-positron pair can be produced via the nonlinear Breit–Wheeler process. A simulation framework has been developed to calculate this process, which is based on a ponderomotive approach that includes strong-field quantum electrodynamical effects via the locally monochromatic approximation (LMA). Here we compare simulation predictions for a variety of observables, in different physical regimes, with numerical evaluation of exact analytical results from theory. For the case of a focussed laser background, we also compare simulation with a high-energy theory approximation. These comparisons are used to quantify the accuracy of the simulation approach in calculating harmonic structure, which appears in the lightfront momentum and angular spectra of outgoing particles, and the transition from multi-photon to all-order pair creation. Calculation of the total yield of pairs over a range of intensity parameters is also used to assess the accuracy of the locally constant field approximation (LCFA).
DOI
10.1140/epjc/s10052-021-09955-3
Publication Date
2022-01-17
Publication Title
The European Physical Journal C
Volume
82
Issue
1
ISSN
1434-6044
Embargo Period
2022-02-18
Organisational Unit
School of Engineering, Computing and Mathematics
Recommended Citation
Blackburn, T. G., & King, B. (2022) 'Higher fidelity simulations of nonlinear Breit–Wheeler pair creation in intense laser pulses', The European Physical Journal C, 82(1). Available at: https://doi.org/10.1140/epjc/s10052-021-09955-3
