caa a22 4500 44586785X CHVBK 20180317145503.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1140/epjd/e2010-10144-9 doi (NATIONALLICENCE)springer-10.1140/epjd/e2010-10144-9 Stopping of swift hydrogen diclusters: oscillator model [Elektronische Daten] [P. Sigmund, A. Schinner] Abstract.: Enhanced stopping of swift hydrogen diclusters has been analysed theoretically. The target has been modeled as a gas of harmonic-oscillator atoms of variable density. This model predicts a proximity effect, i.e., enhanced stopping at high beam energy, and an oscillatory behavior at low energy. Both features get less pronounced with increasing target density due to increased screening of the ion-target interaction by polarization of the medium. Static screening by electrons accompanying the cluster likewise reduces the proximity effect. The Barkas-Andersen correction has been estimated in the $Z_1^3$ limit. Our findings are in contrast with measurements on SiO2 [S.M. Shubeita et al., Phys. Rev. B 77, 115327 (2008)] which showed a pronounced step in the energy dependence of the proximity effect. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2010 Sigmund P. Department of Physics and Chemistry, University of Southern Denmark, 5230, Odense M, Denmark aut Schinner A. Institut für Experimentalphysik, Johannes Kepler Universität, 4040, Linz-Auhof, Austria aut The European Physical Journal D Springer-Verlag 61/1(2011-01-01), 39-50 1434-6060 61:1<39 2011 61 10053 https://doi.org/10.1140/epjd/e2010-10144-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2010-10144-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sigmund P. Department of Physics and Chemistry, University of Southern Denmark, 5230, Odense M, Denmark aut NATIONALLICENCE 700 1- Schinner A. Institut für Experimentalphysik, Johannes Kepler Universität, 4040, Linz-Auhof, Austria aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 61/1(2011-01-01), 39-50 1434-6060 61:1<39 2011 61 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer