Velocity correlations of intermediate mass fragments produced in central collisions of Au+Au at E=150A MeV

B. Kämpfer, R. Kotte, J. Mösner, W. Neubert, D. Wohlfarth, J. P. Alard, Z. Basrak, N. Bastid, I. M. Belayev, Th Blaich, A. Buta, R. Aplar, C. Cerruti, N. Cindro, J. P. Coffin, P. Dupieux, J. Erö, Z. G. Fan, P. Fintz, Z. FodorR. Freifelder, L. Fraysse, S. Frolov, A. Gobbi, Y. Grigorian, G. Guillaume, N. Herrmann, K. D. Hildenbrand, S. Hölbling, O. Houari, S. C. Jeong, M. Jorio, F. Jundt, J. Kecskemeti, P. Koncz, Y. Korchagin, M. Krämer, C. Kuhn, I. Legrand, A. Lebedev, C. Maguire, V. Manko, T. Matulewicz, G. Mgebrishvili, D. Moisa, G. Montaru, I. Montbel, P. Morel, D. Pelte, M. Petrovici, F. Rami, W. Reisdorf, A. Sadchikov, D. Schüll, Z. Seres, B. Sikora, V. Simion, S. Smolyankin, U. Sodan, K. Teh, R. Tezkratt, M. Trzaska, M. A. Vasiliev, P. Wagner, J. P. Wessels, T. Wienold, Z. Wilhelmi, A. L. Zhilin

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Abstract

Velocity correlations of intermediate mass fragments (IMFs), produced in central collisions of Au+Au at 150 MeV beam energy, are extracted from measurements with the FOPI (phase I) detector system at SIS in GSI Darmstadt. The IMF correlation function for semicentral events is found to be affected by the directed sideward flow. When rotating the events into a unique reaction plane an enhancement of correlations, resulting from event mixing effects, vanishes. Selecting violent collisions with a high degree of azimuthal symmetry the correlation function appears nearly independent of additional event or single particle gate conditions. The comparison of the data with a Coulomb dominated final-state interaction model points to an expanding and multifragmenting soure with radius R∼14 fm.

Original languageEnglish
Pages (from-to)R955-R959
JournalPhysical Review C
Volume48
Issue number3
DOIs
Publication statusPublished - Jan 1 1993

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Kämpfer, B., Kotte, R., Mösner, J., Neubert, W., Wohlfarth, D., Alard, J. P., Basrak, Z., Bastid, N., Belayev, I. M., Blaich, T., Buta, A., Aplar, R., Cerruti, C., Cindro, N., Coffin, J. P., Dupieux, P., Erö, J., Fan, Z. G., Fintz, P., ... Zhilin, A. L. (1993). Velocity correlations of intermediate mass fragments produced in central collisions of Au+Au at E=150A MeV. Physical Review C, 48(3), R955-R959. https://doi.org/10.1103/PhysRevC.48.R955