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A: Fachverband Atomphysik

A 8: Poster I

A 8.38: Poster

Dienstag, 9. März 2010, 16:30–19:00, Lichthof

X-ray spectroscopy of collisions between highly charged Ru ions and H₂ clusters — T. Aumann¹, S. Bishop³, K. Blaum⁹, K. Boretzky¹, F. Bosch¹, H. Bräuning¹, C. Brandau^1,3, T. Davinson⁴, I. Dillmann³, O. Ershova^1,5, H. Geissel¹, G. Gyürky⁶, M. Heil¹, F. Käppeler⁷, A. Kelic-Heil¹, C. Kozhuharov¹, C. Langer^1,5, T. Le Bleis^1,5,10, Y.A. Litvinov^1,9, G. Lotay³, J. Marganiec¹, N. Petridis⁵, R. Plag^1,5, U. Popp¹, R. Reifarth^1,5, B. Riese¹, C. Rigollet⁸, C. Scheidenberger¹, H. Simon¹, Th. Stöhlker^1,11, T. Szücs⁶, G. Weber^1,11, H. Weick¹, D.F.A. Winters^1,11, •N. Winters^1,11, P.J. Woods⁴, and Q. Zhong^1,2 — ¹GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany — ²China Institute of Atomic Energy (CIAE), 102413 Beijing, China — ³Technische Universität München, 85748 Garching, Germany — ⁴University of Edinburgh, EH8 9YL Edinburgh, United Kingdom — ⁵Goethe-Universität, 60438 Frankfurt a.M, Germany — ⁶Institute of Nuclear Research of the Hungarian Academy of Sciences, H-4001 Debrecen, Hungary — ⁷Forschungszentrum Karlsruhe, Institut für Kernphysik, 76131 Karlsruhe, Germany — ⁸Kernfysisch Versneller Instituut, 9747 AA Groningen, The Netherlands — ⁹Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany — ¹⁰Institut Pluridisciplinaire Hubert Curien, 67037 Strasbourg, France — ¹¹Ruprecht-Karls-Universität, 69120 Heidelberg, Germany

We performed x-ray spectroscopy of collisions between Ru⁴⁴⁺ and H₂ clusters at low energies (≈10 MeV/u) at the Experimental Storage Ring in Darmstadt. This study was performed together with the main experiment, which looked at proton capture (from H₂ by the ion) during the collision (p-process). Our goal was to identify the influence of the target density (cluster size) on the collisions via the recorded x-ray spectra. The clusters were generated by a novel cryogenic cluster source, which can create clusters with area-densities as high as 10¹³ 1/cm². We will present the results of our analysis and discuss a follow-up experiment.