Target effects on the linear polarization of photons emitted in radiative electron capture by heavy ions

Journal Article · Sun Aug 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.022716· OSTI ID:21448513

Artemyev, A N; Surzhykov, A; Fritzsche, S; Najjari, B; Voitkiv, A B ^[1]

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1. Physikalisches Institut, Universitaet Heidelberg, Philosophenweg 12, D-69120 Heidelberg, Germany and GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, Planckstrasse 1, D-64291 Darmstadt (Germany)

Radiative electron capture by highly-charged, heavy ions is re-investigated within the framework of the first-order perturbation theory and impulse approximation. In this study, we focus especially on the polarization properties of the emitted radiation and on the effects which arise from the binding of the target electrons. In order to explore such effects, detailed calculations have been carried out for relativistic collisions of bare uranium U{sup 92+} projectiles with neutral low- and medium-Z atoms. From these calculations, it is shown that the linear polarization of K-REC (L-REC) photons [photons originating from radiative electron capture into the K shell (L shell)] can be very sensitive to the momentum distribution of bound electrons if the capture occurs selective for the different shells of the target. The most pronounced effect can be observed for collision studies as performed with well-defined impact parameters or upon suppression of the capture from the outer target shells.

• OSTI ID: 21448513
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
APPROXIMATIONS
ATOM COLLISIONS
ATOMS
BOSONS
CALCULATION METHODS
CAPTURE
CHARGED PARTICLES
COLLISIONS
ELECTRON CAPTURE
ELECTRONIC STRUCTURE
ELECTRONS
ELEMENTARY PARTICLES
EMISSION
ENERGY RANGE
FERMIONS
HEAVY IONS
IMPACT PARAMETER
IMPULSE APPROXIMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
K SHELL
L SHELL
LEPTONS
MASSLESS PARTICLES
MULTICHARGED IONS
PERTURBATION THEORY
PHOTON EMISSION
PHOTONS
POLARIZATION
RELATIVISTIC RANGE
URANIUM IONS