Trident process in laser pulses
Trident process in laser pulses
Dinu, V.; Torgrimsson, G.
We study the trident process in laser pulses. We provide exact numerical results for all contributions, including the difficult exchange term. We show that all terms are in general important for a short pulse. For a long pulse, we identify a term that gives the dominant contribution even if the intensity is only moderately high, a0≳1, which is an experimentally important regime where the standard locally constant field (LCF) approximation cannot be used. We show that the spectrum has a richer structure at a0∼1, compared to the LCF regime a0≫1. We study the convergence to LCF as a0 increases and how this convergence depends on the momentum of the initial electron. We also identify the terms that dominate at high energy.
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Physical Review D 101(2020), 056017
DOI: 10.1103/PhysRevD.101.056017
Cited 22 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-33160