期刊
RADIATION PHYSICS AND CHEMISTRY
卷 106, 期 -, 页码 271-277出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2014.08.007
关键词
Rayleigh scattering; Spin-spin effects; Stokes parameters; Photonic polarization
资金
- Research Council for Natural Sciences and Engineering of the Academy of Finland
- German Research Foundation (DFG) [TA 740 1-1]
- FCT - Fundacao para a Ciencia e a Tecnologia (Portugal) - European Community Fund FEDER [PEstOE/FIS/UI0303/2011, PTDC/FIS/117606/2010]
- Fundacao de Amparo a Pesquisa do estado de Minas Gerais (FAPEMIG)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Fundação para a Ciência e a Tecnologia [PTDC/FIS/117606/2010] Funding Source: FCT
We study the polarization characteristics of X-ray photons scattered by hydrogenic atoms, based on the Dirac equation and second-order perturbation theory. The relativistic states used in calculations are obtained using the finite basis set method and expressed in terms of B-splines and B-polynomials. We derive general analytical expressions for the polarization-dependent total cross sections, which are applicable to any atom and ion, and evaluate them separately for linear and circular polarizations of photons. In particular, detailed calculations are performed for the integrated Stokes parameters of the scattered light for hydrogen as well as hydrogen-like neon and argon. For analyzing such integrated Stokes parameters, special attention is given to the electron-photon spin-spin interaction, which mostly stems from the magnetic-dipole contribution of the electron-photon interaction. Subsequently, we find an energy window for the selected targets in which such spin-spin interactions can be probed. (C) 2014 Elsevier Ltd. All rights reserved.
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