Evaluation of Laser-Assisted Bremsstrahlung with Dirac-Volkov Propagators

Journal Article · Fri Jan 26 04:00:00 EST 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.043002· OSTI ID:20861637

Loetstedt, Erik; Jentschura, Ulrich D; Keitel, Christoph H ^[1]

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1. Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany)

We study spontaneous bremsstrahlung emission in a highly intense laser field. In this regime the interaction with the laser field has to be treated nonperturbatively by using the relativistic formalism including Dirac-Volkov propagators, while the interaction with the Coulomb field and the bremsstrahlung radiation can be treated in first-order perturbation theory. For the intermediate electron state a fully laser-dressed propagator is used, including radiative corrections to avoid singularities on the mass shell. We find that the use of the Dirac-Volkov propagator is crucial to obtain correct numerical results. The cross section of the process is evaluated for laser intensities of order 10{sup 20} W/cm{sup 2} and relativistic energies of the initial electron.

• OSTI ID: 20861637
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 98; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BREMSSTRAHLUNG
COULOMB FIELD
CROSS SECTIONS
ELECTRONS
EVALUATION
LASER RADIATION
LASERS
PERTURBATION THEORY
PROPAGATOR
RADIATIVE CORRECTIONS
RELATIVISTIC RANGE
SINGULARITY