Doppler-tuned Bragg spectroscopy of excited levels in He-like uranium: A discussion of the uncertainty contributions

We present the uncertainty discussion of a recent experiment performed at the GSI storage ring ESR for the accurate energy measurement of the He-like uranium 1s2p3P2→ 1s2s3S1 intra-shell transition. For this propose we used a Johann-type Bragg spectrometer that enables to obtain a relative energy me...

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Bibliographic Details
Published in:Journal of physics. Conference series 2009-04, Vol.163 (1), p.012026
Main Authors: Trassinelli, M, Kumar, A, Beyer, H F, Indelicato, P, Märtin, R, Reuschl, R, Stöhlker, T H
Format: Article
Language:English
Subjects:
Atomic Physics
Energy measurement
Excitation spectra
Fluorescence
Physics
Uncertainty
Uranium
X ray sources
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Summary:We present the uncertainty discussion of a recent experiment performed at the GSI storage ring ESR for the accurate energy measurement of the He-like uranium 1s2p3P2→ 1s2s3S1 intra-shell transition. For this propose we used a Johann-type Bragg spectrometer that enables to obtain a relative energy measurement between the He-like uranium transition, about 4.51 keV, and a calibration x-ray source. As reference, we used the Kα fluorescence lines of zinc and the Li-like uranium 1s22p2P3/2 → 1 s22s 2S1/2 intra-shell transition from fast ions stored in the ESR. A comparison of the two different references, i.e., stationary and moving x-ray source, and a discussion of the experimental uncertainties is presented.
ISSN:1742-6596
1742-6588
1742-6596
1742-6588
DOI:10.1088/1742-6596/163/1/012026