Open AccessPolarization studies of radiative electron capture into highly-charged uranium ions
Author(s) -
Sebastian Heß,
H. Bräuning,
U. Spillmann,
C. Brandau,
Sabrina Geyer,
S. Hagmann,
M Hegewald,
C. Kozhuharov,
T. Krings,
A. Kumar,
Roland Martinꝉ,
D. Protić,
Brian E. O’Rourke,
R. Reuschl,
M. Trassinelli,
S. Trotsenko,
G. Weber,
D. Winters,
Th. Stöhlker
Publication year - 2009
Publication title -
journal of physics conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/163/1/012072
Subject(s) - polarimeter , ion , physics , polarization (electrochemistry) , electron , atomic physics , radiative transfer , highly charged ion , spectroscopy , electron shell , uranium , compton scattering , nuclear physics , polarimetry , ion source , optics , scattering , chemistry , ionization , quantum mechanics
International audienceRecent advances in the development of 2D microstrip detectors open up new possibilities for hard x-ray spectroscopy, in particular for polarization studies. These detectors make ideal Compton polarimeters, which enable us to study precisely the polarization of hard x-rays. Here, we present recent results from measurements of Radiative Electron Capture into the K-shell of highly-charged uranium ions. The experiments were performed with a novel 2D Si(Li) Compton polarimeter at the Experimental Storage Ring at GSI. Stored and cooled beams of U91+ and U92+ ions, with kinetic energies of 43 MeV/u and 96 MeV/u respectively, were crossed with a hydrogen gasjet. The preliminary data analysis shows x-rays from the K-REC process, emitted perpendicularly to the ion beam, to be strongly linearly polarized