Direct observation of systematic deviations from the Bethe stopping theory for relativistic heavy ions

The SIS accelerator facilities at GSI in combination with a magnetic spectrometer allow the direct measurement of stopping powers for relativistic heavy ions up to uranium with high precision for the first time. Here, we report our representative results obtained for projectiles up to xenon in the e...

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Bibliographic Details
Published in:Physical review letters 1994-07, Vol.73 (1), p.50-53
Main Authors: Scheidenberger, C, Geissel, H, Mikkelsen, HH, Nickel, F, Brohm, T, Folger, H, Irnich, H, Magel, A, Mohar, MF, Münzenberg, G, Pfützner, M, Roeckl, E, Schall, I, I, Schardt, D, Schmidt, K, Schwab, W, Steiner, M, Stöhlker, T, Sümmerer, K, Vieira, DJ, Voss, B, Weber, M
Format: Article
Language:English
Subjects:
664300 - Atomic & Molecular Physics- Collision Phenomena- (1992-)
664400 - Experimentally Derived Information on Atomic & Molecular Properties- (1992-)
ACCURACY
ATOMIC AND MOLECULAR PHYSICS
CHARGE DISTRIBUTION
CHARGE STATES
CHARGED PARTICLES
DATA
ENERGY RANGE
EXPERIMENTAL DATA
HEAVY IONS
INFORMATION
IONS
NUMERICAL DATA
RELATIVISTIC RANGE
STOPPING POWER
URANIUM IONS
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Summary:The SIS accelerator facilities at GSI in combination with a magnetic spectrometer allow the direct measurement of stopping powers for relativistic heavy ions up to uranium with high precision for the first time. Here, we report our representative results obtained for projectiles up to xenon in the energy range from 700 to 1000 MeV/u. Systematic deviations from the Bethe stopping-power theory are observed, whereas the data are in good agreement with theory once Mott and Bloch corrections and the Fermi density effect are included.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.73.50