1. High angular momentum states populated in fragmentation reactions
- Author
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H. Schaffner, K.-H. Schmidt, Mauricio Portillo, M. Winkler, F. Becker, David Hohn, C. Wheldon, G. Benzoni, C. J. Pearson, Philip M Walker, R. Lozeva, Robert Page, Gerda Neyens, Enrique Casarejos, H. Weick, Jörgen Ekman, S.K. Mandal, A. Kelic, D. Sohler, Milena Mineva, I. Kojouharov, P. H. Regan, Margareta Hellström, J. Leske, Hans Geissel, A. Banu, K. A. Gladnishki, Norio Saito, K. Sümmerer, Dirk Rudolph, H. J. Wollersheim, Y Kopatch, J. J. Valiente-Dobón, Zs. Podolyák, J. Gerl, M. Górska, H. Grawe, and H. J. Boardman
- Subjects
Physics ,Angular momentum ,education.field_of_study ,Nuclear and High Energy Physics ,Fragmentation (mass spectrometry) ,Metastability ,SHELL model ,Population ,Degrees of freedom (statistics) ,Rotational transition ,Atomic physics ,education ,Projectile fragmentation - Abstract
The population of metastable states produced in relativistic-energy fragmentation of a U-238 beam has been measured. For states with angular momentum greater than or similar to 20h, a much higher population than expected has been observed. By introducing a collective component to the generation of angular momentum the experimental data can be understood. This is the first time that a collective degree of freedom has be shown to play a major role in such high-energy collisions. (c) 2005 Elsevier B.V. All rights reserved.
- Published
- 2006
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