Pair annihilation in laser pulses: Optical versus x-ray free-electron laser regimes
2011 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 84, no 3, 032119- p.Article in journal (Refereed) Published
We discuss the theory and phenomenology of pair annihilation, within an ultrashort laser pulse, to a single photon. The signature of this process is the unidirectional emission of single photons with a fixed energy. We show that the cross section is significantly larger than for two-photon pair annihilation in vacuum, with x-ray free-electron laser parameters admitting a much clearer signal than optical beams.
Place, publisher, year, edition, pages
New York, N.Y.: Publ. by the American Physical Society through the American Institute of Physics , 2011. Vol. 84, no 3, 032119- p.
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:umu:diva-48462DOI: 10.1103/PhysRevA.84.032119ISI: 000295261900001OAI: oai:DiVA.org:umu-48462DiVA: diva2:450961