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APS » Journals » Phys. Rev. Lett. » Volume 85 » Issue 21
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Phys. Rev. Lett. 85, 4518–4521 (2000)

Shaping of Intense Ion Beams into Hollow Cylindrical Form

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U. Neuner*, R. Bock, M. Roth, and P. Spiller
GSI Darmstadt mbH, Planckstrasse 1, 64291 Darmstadt, Germany

C. Constantin, U. N. Funk, M. Geissel, S. Hakuli, D. H. H. Hoffmann, J. Jacoby, A. Kozyreva, N. A. Tahir, S. Udrea, and D. Varentsov
TU Darmstadt, Institut für Kernphysik, Schlossgartenstrasse 9, 64289 Darmstadt, Germany

A. Tauschwitz
TU Darmstadt, Institut für Angewandte Physik, Schlossgartenstrasse 7, 64289 Darmstadt, Germany

Received 28 July 2000; published in the issue dated 20 November 2000

A specifically tailored plasma lens could shape a high-energy, heavy-ion beam into the form of a hollow cylinder without loss of beam intensity. It has been experimentally confirmed that both a positive as well as a negative radial gradient of the current density in the active plasma lens can be the underlying principle. Calculations were performed that yield the ideal current density distribution for both cases. A numerical simulation of an experiment with an intense ion beam highlights that the shaping of the beam increases the achievable compression in a lead sample.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.4518
DOI:
10.1103/PhysRevLett.85.4518
PACS:
41.85.Ct, 52.40.Mj

*Electronic address: u.neuner@gsi.de

 
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