Impact parameter sensitive study of inner-shell atomic processes in the experimental storage ring

A. Gumberidze (1) , C. Kozhuharov (2) , R.T. Zhang (1) , S. Trotsenko , Y.S. Kozhedub , R.D. Dubois , H.F. Beyer , K.-H. Blumenhagen , C. Brandau , A. Bräuning-Demian , W. Chen , O. Forstner , B. Gao , T. Gassner , R.E. Grisenti , S. Hagmann , P.-M. Hillenbrand , P. Indelicato (3) , A. Kumar , M. Lestinsky (1) , Yu. A. Litvinov (1) , N. Petridis (1) , D. Schury (1) , U. Spillmann (1) , C. Trageser , M. Trassinelli (2) , X. Tu (1) , Th. Stöhlker (1)

1 GSI - GSI Helmholtzzentrum für Schwerionenforschung
2 INSP - Institut des Nanosciences de Paris
3 LKB [Collège de France] - Laboratoire Kastler Brossel

In this work, we present a pilot experiment in the experimental storage ring (ESR) at GSI devoted to impact parameter sensitive studies of inner shell atomic processes for low-energy (heavy-) ion-atom collisions. The experiment was performed with bare and He-like xenon ions (Xe 54+ , Xe 52+ ) colliding with neutral xenon gas atoms, resulting in a symmetric collision system. This choice of the projectile charge states was made in order to compare the effect of a filled K-shell with the empty one. The projectile and target X-rays have been measured at different observation angles for all impact parameters as well as for the impact parameter range of ∼35–70 fm.

Mots clés: Ion-atom collisions; Storage ring; X-rays

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

A. Gumberidze, C. Kozhuharov, R.T. Zhang, S. Trotsenko, Y.S. Kozhedub, et al.. Impact parameter sensitive study of inner-shell atomic processes in the experimental storage ring. 18th International Conference on the Physics of Highly Charged Ions, Sep 2016, Kielce, Poland. pp.27-30, ⟨10.1016/j.nimb.2017.04.090⟩. ⟨hal-01645767⟩