Phys. Rev. C
71,
054608
(2005)
[7 pages]
Ghoshal-like test of equilibration in near-Fermi-energy heavy-ion collisions
J. Wang et al. NIMROD Collaboration
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J. Wang1,*, T. Keutgen1,†, R. Wada1, K. Hagel1, Y. G. Ma1,‡, M. Murray1,§, L. Qin1, P. Smith1, J. B. Natowitz1, R. Alfaro2, J. Cibor3, A. Botvina1, M. Cinausero4, Y. El Masri5, D. Fabris6, A. Keksis1, S. Kowalski7, M. Lunardon6, A. Makeev1, N. Marie1,**, E. Martin1, Z. Majka8, A. Martinez-Davalos2, A. Menchaca-Rocha2, G. Nebbia6, S. Moretto6, G. Prete4, V. Rizzi4, A. Ruangma1, D. V. Shetty1, G. Souliotis1, P. Staszel8, M. Veselsky1, G. Viesti6, E. M. Winchester1, S. J. Yennello1, and W. Zipper7 (NIMROD Collaboration)
1Cyclotron Institute, Texas A & M University, College Station, Texas 77843, USA 2Instituto de Fisica, Universidad National Autonoma de Mexico, Apactado Postal 20-364 01000, Mexico City, Mexico 3Institute of Nuclear Physics, ul. Radzikowskiego 152, PL-31-342 Krakow, Poland 4INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy 5FNRS and IPN, Université Catholique de Louvain, B-1348 Louvain-Neuve, Belgium 6INFN and Dipartimento di Fisica dell’ Universitá di Padova, I-35131 Padova, Italy 7Institute of Physics, University of Silesia, PL-40007, Katowice, Poland 8Jagellonian University, M Smoluchowski Institute of Physics, PL-30059, Krakow, Poland
A. Ono
Department of Physics, Tohoku University, Sendai 980-8578, Japan
Received 23 December 2004; published 31 May 2005
Calorimetric and coalescence techniques have been employed to probe equilibration for hot nuclei produced in heavy-ion collisions of 35 to 55 MeV/nucleon projectiles with medium mass targets. Entrance channel mass asymmetries and energies were selected so that very hot composite nuclei of similar mass and excitation would remain after early stage preequilibrium particle emission. Intercomparison of the properties and deexcitation patterns for these different systems provides evidence for the production of hot nuclei with decay patterns relatively independent of the specific entrance channel.
© 2005 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevC.71.054608
DOI:
10.1103/PhysRevC.71.054608
PACS:
25.70.Pq, 24.60.Ky, 05.70.Jk
*E-mail address: wang@comp.tamu.edu †Now at FNRS and IPN, Université Louvain-Neuve, Belgium Catholique de Louvain, B-1348 Belgium. ‡On leave from Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800, China. §Now at University of Kansas, Lawrence, Kansas 66045-7582. **Now at LCP Caen, ISMRA, IN2P3-CNRS, F-14050 Caen, France.
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