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Compton scattering S matrix and cross section in strong magnetic field
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). University of Turku, Finland.
Number of Authors: 3
2016 (English)In: Physical Review D, ISSN 2470-0010, Vol. 93, no 10, 105003Article in journal (Refereed) Published
Abstract [en]

Compton scattering of polarized radiation in a strong magnetic field is considered. The recipe for calculation of the scattering matrix elements, the differential and total cross sections based on quantum electrodynamic second-order perturbation theory is presented for the case of arbitrary initial and final Landau level, electron momentum along the field and photon momentum. Photon polarization and electron spin state are taken into account. The correct dependence of natural Landau level width on the electron spin state is taken into account in a general case of arbitrary initial photon momentum for the first time. A number of steps in the calculations were simplified analytically making the presented recipe easy to use. The redistribution functions over the photon energy, momentum and polarization states are presented and discussed. The paper generalizes already known results and offers a basis for the accurate calculation of radiation transfer in a strong B field, for example, in strongly magnetized neutron stars.

Place, publisher, year, edition, pages
2016. Vol. 93, no 10, 105003
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-131208DOI: 10.1103/PhysRevD.93.105003ISI: 000375657200013OAI: oai:DiVA.org:su-131208DiVA: diva2:936877
Available from: 2016-06-14 Created: 2016-06-14 Last updated: 2016-06-14Bibliographically approved

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Astronomy, Astrophysics and Cosmology

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