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Interaction of heavy ion beams with dense plasmas

Published online by Cambridge University Press:  09 March 2009

C. Stöckl ,
O. Boine-Frankenheim ,
M. Roth ,
W. Süb ,
H. Wetzler ,
W. Seelig ,
M. Kulish ,
M. Dornik ,
W. Laux  and
P. Spiller
...Show all authors
C. Stöckl
Affiliation:
TH-Darmstadt, Schloßgartenstr., 7 D-64289 Darmstadt, Germany
O. Boine-Frankenheim
Affiliation:
TH-Darmstadt, Schloßgartenstr., 7 D-64289 Darmstadt, Germany
M. Roth
Affiliation:
TH-Darmstadt, Schloßgartenstr., 7 D-64289 Darmstadt, Germany
W. Süb
Affiliation:
TH-Darmstadt, Schloßgartenstr., 7 D-64289 Darmstadt, Germany
H. Wetzler
Affiliation:
TH-Darmstadt, Schloßgartenstr., 7 D-64289 Darmstadt, Germany
W. Seelig
Affiliation:
TH-Darmstadt, Schloßgartenstr., 7 D-64289 Darmstadt, Germany
M. Kulish
Affiliation:
Institute for Chemical Physics, Chernogolovka, Russia
M. Dornik
Affiliation:
GSI-Darmstadt, Planckstr. 1, D-64291 Darmstadt, Germany
W. Laux
Affiliation:
GSI-Darmstadt, Planckstr. 1, D-64291 Darmstadt, Germany
P. Spiller
Affiliation:
GSI-Darmstadt, Planckstr. 1, D-64291 Darmstadt, Germany
M. Stetter
Affiliation:
GSI-Darmstadt, Planckstr. 1, D-64291 Darmstadt, Germany
S. Stöwe
Affiliation:
GSI-Darmstadt, Planckstr. 1, D-64291 Darmstadt, Germany
J. Jacoby
Affiliation:
Universität Erlangen, Erwin-Rommel-Str. 1, D-91085 Erlangen, Germany
D.H.H. Hoffmann
Affiliation:
Universität Erlangen, Erwin-Rommel-Str. 1, D-91085 Erlangen, Germany
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Abstract

The main objective of the experimental plasma physics activities at the Gesellschaft für Schwerionenforschung (GSI) is the interaction processes of heavy ions with dense ionized matter. Gas discharge plasma targets were used for energy loss and charge state measurements in a regime of electron density and temperature up to 1019 cm-3 and 20 eV, respectively. Progress has been achieved in the understanding of charge-exchange processes in fully ionized hydrogen plasma. An improved model taking excitation-autoionization processes into account has removed most of the discrepancies of previous theoretical descriptions. Furthermore, it was found that the energy loss of the ion beam serves as an excellent diagnostic tool for measuring the electron density in partially ionized plasmas such as argon. The experience with these methods will be used in the future to diagnose dense laser produced plasmas. A setup with a 100 J/5 GW Nd:glass laser, currently under construction, will provide access to density range up to 1021 cm-3 and temperatures of more than 100 eV. To reach electron densities near solid-state density (1023 cm-3), heavy ion heated frozen rare gas crystals were used. The first hydrodynamic motion of ion heated solid material was observed. Vacuum-ultraviolet (VUV) spectroscopy was applied to diagnose these strongly coupled nonideal plasmas.

Type
Research Article
Information
Laser and Particle Beams , Volume 14 , Issue 4 , December 1996 , pp. 561 - 574
Copyright
Copyright © Cambridge University Press 1996

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References

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