SAMOP 2021 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 8: Collisions, scattering, and correlation phenomena

A 8.1: Poster

Dienstag, 21. September 2021, 16:30–18:30, P

Near-adiabatic collisions of Xe54+ +Xe at the ESR Storage ring — •Siegbert Hagmann¹, Pierre-Michel Hillenbrand^1,2, Jan Glorius¹, Uwe Spillmann¹, Yuri Litvinov¹, Yuri Kozhedub⁶, Ilya Tupitsyn⁶, Michael Lestinsky¹, Alexander Gumberidze^1,3, Sergij Trotsenko^1,4, Markus Steck¹, Robert Grisenti^1,2, Niikos Petridis^1,2, Shahab Sanjari¹, Carsten Brandau¹, Ester Menz¹, Timo Morgenroth¹, and Thomas Stoehlker^1,4,5 — ¹Helmholtzzentrum GSI, Darmstadt — ²Inst. f. Kernphysik, Univ. Frankfurt — ³EMMI GSI-Darmstadt — ⁴Helmholtz Inst Jena — ⁵Inst.f.Quantenelektronik Univ Jena — ⁶Dep Phys. St Petersburg State Univ

We study multi-electron transfer processes in near adiabatic collisions of bare, H-like and He-like Xe54+*52+ ions with Xe atoms and measure emitted target- and projectile K- and L- x rays in coincidence with projectiles which have captured 3 to 6 electrons, and with time of flight of recoiling Xe target ions. Shells beyond the projectile P shell are significantly populated; K x rays from high n shells indicate that outer shell transfer dominantly ends in low l states, decaying directly to the K shell. Single capture favors capture into the 2p3/2 over the 2p1/2 state and multiple capture n*3 the 2p1/2 populates than the 2p3/2 state. For the target K x ray spectra, we observe that the ratio K- satellite/K-hypersatellite yields is enhanced over the predictions by a relativistic theory.