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,
Ajay Kumar,
R. Märtin,
D. Protić,
Brian O’Rourke,
R. Reuschl,
Martino Trassinelli,
S. Trotsenko,
G. Weber,
D. Winters,
Thomas 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) - ion , uranium , radiative transfer , polarization (electrochemistry) , electron , atomic physics , physics , materials science , nuclear physics , chemistry , optics , 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