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4. Recombination measurements at low energies with Ar16+ and Ar18+ ions in a dense, cold electron target.

Author

Uwira, O., Müller, A., Spies, W., Frank, A., Linkemann, J., Brandau, C., Cramer, T., Kozhuharov, C., Klabunde, J., Angert, N., Mokler, P.H., Becker, R., Kleinod, M., and Badnell, N.R.

Abstract

Recombination of multiply charged ions with electrons at very low relative energies has become a major topic of interest, due to the observation of rates which are enhanced beyond the expectations for radiative recombination. We present results for Ar16+ and Ar18+ ions from systematic measurements along the argon isonuclear sequence using a high density cold electron beam target (ne = 7 × 109 cm-3) at the UNILAC of GSI. The transverse and longitudinal temperatures of the electron beam were determined from DR resonance features observed with metastable Ar16+ (23S) ions. The rate at Erel = 0 for radiative recombination of completely stripped Ar18+ calculated with electron beam temperatures kT∥ = 0.002 eV, kT⊥ = 0.2 eV amounts to α = 10-9 cm3 s-1. This is exceeded by nearly a factor of 10 by the rate measured in experiments with Ar18+ ions. [ABSTRACT FROM AUTHOR]

Published
1997
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9. Acceleration of high-current ion beams.

Author

Spadtke, P., Emig, H., Klabunde, J., Mayr, R., Ruck, D.M., and Tinschert, K.

Subjects
ION bombardment, ION accelerators, SPACE charge, RADIO frequency, QUADRUPOLES
Abstract

Discusses the acceleration of high-current ion beams. Space charge compensation of the measured emittances of ion beams; Simulation of the influence of the space charge on the beam quality; Input energy of the radio frequency quadrupole.

Published
1996

10. ECR ion source and spectrometer for the new high charge state injector at GSI.

Author

Schulte, H., Tinschert, K., Bossler, J., Wolf, B. H., Klabunde, J., Dahl, L., Schwab, Th., and Klein, J.-P.

Subjects
INJECTORS, ION sources, SPECTROMETERS, ELECTRON cyclotron resonance sources, NUCLEAR physics instruments
Abstract

For the new high charge state injector (HLI)at GSI a 14.5 GHz electron cyclotron resonance ion source of CAPRICE type was built at CEN-Grenoble. Test bench results were obtained prior to installation at HLI for Ar and Fe including emittance data. The HLI installation of the source and the high-resolution spectrometer is described in some detail. First systematic studies for Ar charge state spectra (including gas mixing) are presented. The spectrometer resolution was tested using Xe isotopes. The analyzed beam is very stable and proved to be well suited for injection into the RFQ accelerator. [ABSTRACT FROM AUTHOR]

Published
1992
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17. The heavy ion therapy project at GSI

Author

Kraft, G., Becher, W., Blasche, K., Böhne, D., Fischer, B., Gademann, G., Geissel, H., Haberer, Th., Klabunde, J., Kraft-Weyrather, W., Langenbeck, B., Münzenberg, G., Ritter, S., Rösch, W., Schardt, D., Stelzer, H., and Schwab, Th.

Published
1991
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18. Heavy ion injector for the CERN Linac 1

Author

Wolf, B.H., Leible, K., Spädtke, P., Klabunde, J., Langenbeck, B., Angert, N., Gough, R.A., Staples, J., Caylor, R., Howard, D., MacGill, R., Tanabe, J., Haseroth, H., Hill, C., Tetu, P., Weiss, M., and Geller, R.

Published
1987
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