Observation of the 2p3/2 -> 2s1/2 intra-shell transition in He-like uranium

Martino Trassinelli (1, 2) , Ajay Kumar (1) , Heinrich Beyer (1) , Paul Indelicato (3) , Renate Märtin (1) , Regina Reuschl (1) , Yuri S. Kozhedub (4) , Carsten Brandau (1) , Harald Bräuning (1) , Sabrina Geyer (1) , Alexander Gumberidze (1) , Sebastian Hess (1) , Pawel Jagodzinski (5) , Christophor Kozhuharov (1) , Dieter Liesen (1) , Sergiy Trotsenko (1) , Günter Weber (1) , Danyal Winters (1) , Thomas Stöhlker (1, 6)

1 GSI - Helmholtz zentrum für Schwerionenforschung GmbH
2 INSP - Institut des Nanosciences de Paris
3 LKB (Jussieu) - Laboratoire Kastler Brossel
4 Department of Physics
5 Institute of Physics
6 Institut für Kernphysik

We present the first identification and energy measurement of the 1s2p 3P2 → 1s2s 3S1 transition in He-like uranium. The experiment was performed at the internal gas-jet target of the ESR storage ring at GSI by means of a Bragg crystal spectrometer. Using the 1s2 2p 2P3/2 → 1s2 2s 2S1/2 transition in Li-like uranium as reference, we obtained an accuracy in the order of 0.01%, which provides, at present, the most accurate test of many-body and QED contributions in very heavy He-like ions

Domaines: Physique Atomique [physics.atom-ph]

Martino Trassinelli, Ajay Kumar, Heinrich Beyer, Paul Indelicato, Renate Märtin, et al.. Observation of the 2p3/2 -> 2s1/2 intra-shell transition in He-like uranium. 2008. ⟨hal-00337736v1⟩