Radiative electron capture as a tunable source of highly linearly polarized x-rays

Abstract

The radiative electron capture (REC) into the K shell of bare Xe ions colliding with a hydrogen gas target has been investigated. In this study, the degree of linear polarization of the K-REC radiation was measured and compared with rigorous relativistic calculations as well as with the previous results recorded for U${}^{92+}$. Owing to the improved detector technology a significant gain in precision of the present polarization measurement is achieved compared to the previously published results. The obtained data confirms that for medium-Z ions such as Xe the REC process is a source of highly polarized x-rays which can easily be tuned with respect to the degree of linear polarization and the photon energy. We argue, in particular, that for relatively low energies the photons emitted under large angles are almost fully linear polarized.

References in corpus (6)

• Nuclear Physics Experiments with Ion Storage Rings
• Polarization measurement of dielectronic recombination transitions in highly charged krypton ions
• First Measurement of the ${}^{96}$Ru(p,$\gamma$)${}^{97}$Rh Cross Section for the p-Process with a Storage Ring
• Approaching the Gamow window with stored ions: Direct measurement of ${}^{124}$Xe(p,$\gamma$) in the ESR storage ring
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Cited by in corpus (2)

• Radiative recombination of twisted electrons with hydrogen-like heavy ions: Linear polarization of emitted photons
• Investigation of two-photon 2s -> 1s decay in one-electron and one-muon ions