Interatomic coulombic decay - the mechanism for rapid deexcitation of hollow atoms
Interatomic coulombic decay - the mechanism for rapid deexcitation of hollow atoms
Wilhelm, R. A.; Gruber, E.; Schwestka, J.; Kozubek, R.; Madeira, T. I.; Marques, J. P.; Kobus, J.; Krasheninnikov, A. V.; Schleberger, M.; Aumayr, F.
The impact of highly charged ions onto a solid gives rise to charge exchange between the ions and target atoms, so that slow ions get neutralized in the vicinity of the surface. Using highly charged Ar and Xe ions and the surface-only material graphene as a target, we show that the neutralization and de-excitation of the ions proceeds on a sub-10 fs time scale. We further demonstrate that a multiple interatomic coulombic decay (ICD) model of highly charged ions can describe the observed ultrafast de-excitation. Other de-excitation mechanisms involving non-radiative decay and quasi- molecular orbitals formation during the impact are not important, as follows from the comparison of our experimental data with the results of first-principles calculations. Our method also enables the estimation of ICD rates directly.
Keywords: slow highly charged ion; HCI; graphene; interatomic coulombic decay; ICD
Involved research facilities
- Ion Beam Center DOI: 10.17815/jlsrf-3-159
Related publications
- DOI: 10.17815/jlsrf-3-159 is cited by this (Id 25087) publication
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Physical Review Letters 119(2017)10, 103401
DOI: 10.1103/PhysRevLett.119.103401
Cited 71 times in Scopus -
Poster
28th International Conference on Atomic Collisions in Solids - ICACS 2018, 01.-06.07.2018, Caen, Frankreich -
Invited lecture (Conferences)
19th International Conferences on the Physics of Highly Charged Ions - HCI 2018, 02.-07.09.2018, Lissabon, Portugal -
Lecture (Conference)
The International Conference on Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces - MPS 2018, 21.-24.08.2018, Budapest, Ungarn -
Poster
German Conference for Research with Synchrotron Radiation, Neutrons and Ion Beams at Large Facilities, 17.-19.09.2018, München, Deutschland
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