Hannover 2010 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 14: Miscellaneous
P 14.1: Vortrag
Mittwoch, 10. März 2010, 16:30–16:45, B 302
Energy loss of heavy ions in directly and indirectly laser-generated plasma — •Alexander Frank1, Dennis Schumacher1, Abel Blazevic2, Thomas Hessling2, Witold Cayzac1, Gabriel Schaumann1, Gregor Schiwietz3, Pedro Luis Grande4, Anna Tauschwitz5, Mikhail Basko6, Joachim Maruhn5, and Markus Roth1 — 1TU Darmstadt — 2Helmholtzzentrum für Schwerionenforschung — 3Helmholtz-Zentrum Berlin für Materialien und Energie — 4Universidade Federal do Rio Grande do Sul — 5Universität Frankfurt — 6ITEP, Moscow
At GSI there are two approaches for investigating the interaction of swift ions penetrating laser-generated plasma. One is to create the plasma by direct irradiation of a thin carbon foil. This scheme produces high plasma temperatures and hence high ionization degrees. The second approach uses a gold hohlraum as an x-ray converter target to achieve a volumetric heating of the target foil and hence a greater homogeneity of the plasma parameters. We present an overview on recent results and developments of beam plasma interaction studied with an Ca ion beam. A new spectrometer based on CVD diamond was developed for measuring the projectile charge states exiting the plasma target and energy loss. The results are compared with theoretical predictions based on modified charge transfer cross section calculation routines of ETACHA and a modified version of the CasP code. Furthermore time-resolved and time-integrated hohlraum spectra are presented in this talk and different target schemes for ion-plasma interaction experiments are presented.