TY - JOUR
T1 - Relativistic polarization analysis of Rayleigh scattering by atomic hydrogen
AU - Safari, L.
AU - Amaro, P.
AU - Fritzsche, S.
AU - Santos, J. P.
AU - Tashenov, S.
AU - Fratini, F.
N1 - L.S. and F.F. acknowledge financial support by the Research Council for Natural Sciences and Engineering of the Academy of Finland. P.A. and S.T. acknowledge the support of the German Research Foundation (DFG) within the Emmy Noether program under Contract No. TA 740 1-1. S.F. acknowledges support by the FiDiPro program of the Finnish Academy. J.P.S. and P.A. acknowledge the support by FCT-Fundacao para a Ciencia e a Tecnologia (Portugal), through Projects No. PEstOE/FIS/UI0303/2011 and No. PTDC/FIS/117606/2010, financed by the European Community Fund FEDER through the COMPETE-Competitiveness Factors Operational Programme. F.F. acknowledges financial support by Fundacao de Amparo a Pesquisa do estado de Minas Gerais (FAPEMIG).
PY - 2012/10/3
Y1 - 2012/10/3
N2 - A relativistic analysis of the polarization properties of light elastically scattered by atomic hydrogen is performed, based on the Dirac equation and second-order perturbation theory. The relativistic atomic states used for the calculations are obtained by making use of the finite basis set method and are expressed in terms of B splines and B polynomials. We introduce two experimental scenarios in which the light is circularly and linearly polarized, respectively. For each of these scenarios, the polarization-dependent angular distribution and the degrees of circular and linear polarization of the scattered light are investigated as a function of scattering angle and photon energy. Analytical expressions are derived for the polarization-dependent angular distribution which can be used for scattering by both hydrogenic as well as many-electron systems. Detailed computations are performed for Rayleigh scattering by atomic hydrogen within the incident photon energy range 0.5 to 5 keV. Particular attention is paid to the effects that arise from higher (nondipole) terms in the expansion of the electron-photon interaction.
AB - A relativistic analysis of the polarization properties of light elastically scattered by atomic hydrogen is performed, based on the Dirac equation and second-order perturbation theory. The relativistic atomic states used for the calculations are obtained by making use of the finite basis set method and are expressed in terms of B splines and B polynomials. We introduce two experimental scenarios in which the light is circularly and linearly polarized, respectively. For each of these scenarios, the polarization-dependent angular distribution and the degrees of circular and linear polarization of the scattered light are investigated as a function of scattering angle and photon energy. Analytical expressions are derived for the polarization-dependent angular distribution which can be used for scattering by both hydrogenic as well as many-electron systems. Detailed computations are performed for Rayleigh scattering by atomic hydrogen within the incident photon energy range 0.5 to 5 keV. Particular attention is paid to the effects that arise from higher (nondipole) terms in the expansion of the electron-photon interaction.
UR - http://www.scopus.com/inward/record.url?scp=84867253899&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.86.043405
DO - 10.1103/PhysRevA.86.043405
M3 - Article
AN - SCOPUS:84867253899
SN - 1050-2947
VL - 86
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 4
M1 - 043405
ER -