Quantum interference of K capture in energetic Ge31+(1s)-Kr collisions

R. Schuch, M. Schulz, Y. S. Kozhedub, V. M. Shabaev, I. I. Tupitsyn, G. Plunien, P. H. Mokler, H. Schmidt-Boecking

Research output

Abstract

We have measured characteristic K x rays in coincidence with the scattered particles from collisions of hydrogenlike Ge ions with Kr atoms. The ions were first accelerated to 8.6 MeV/amu, post-stripped to H-like charge state, and decelerated to around 2.5 MeV/amu. From the measurements the probabilities for K-shell to K-shell charge transfer as a function of collision impact parameters were obtained. The probabilities show an onset of oscillations which are interpreted as quantum interference between the K-shell to K-shell electron transfer amplitudes in two spatially separated coupling regions in the incoming and outgoing parts of the collision. The probabilities of K-shell vacancy distribution created by the collision are calculated within a relativistic independent electron model using the coupled-channel approach with atomlike Dirac-Fock-Sturm orbitals. A reasonable agreement between the theoretical results and the experimental data is found.

Original languageEnglish
Article number042701
Number of pages7
JournalPhysical Review A
Volume101
Issue number4
DOIs
Publication statusPublished - 2 Apr 2020

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