Onset of collective expansion in nucleus-nucleus collisions below 100 MeV/u

Autor:	A. Péghaire, S.C. Jeong, J.P. Patry, A. Kerambrun, R. Brou, Y. Cassagnou, E. Vient, J.C. Steckmeyer, C. Lebrun, F. Saint-Laurent, G. Bizard, J. Péter, R. Laforest, R. Legrain, Z.Y. He, C. Cabot, Dominique Durand, R. Regimbart, D. Cussol, Y. El Masri, Elio Rosato, J.C. Angélique, G. Auger, A. Buta, P. Eudes, Edilson Crema, Bernard Tamain
Rok vydání:	1996
Předmět:	Nuclear reaction Physics Nuclear and High Energy Physics Nuclear Theory Charge (physics) Kinetic energy Thermal expansion Nuclear physics medicine.anatomical_structure medicine Atomic physics Nuclear Experiment Nucleus Excitation
Zdroj:	Nuclear Physics A. 604:208-218
ISSN:	0375-9474
Popis:	In Ar-36 + Al-27 reactions at bombarding energies E/A from 55 to 95 MeV, the mass and excitation energy of the quasi-projectile have been reconstructed at all impact parameters. Up to excitation energies E*/A of similar to 5-6 MeV, the mean kinetic energies of Z = 1 to Z = 9 fragments are in agreement with values predicted by sequential statistical decay, Above, a collective expansion energy is needed that grows with E*/A, reaching 1 to 2.2 MeV/u, depending on the de-excitation process, at E*/A similar to 10 MeV. It decreases with the fragment charge, The dominant role of excitation energy supports the scenario of thermal expansion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::767fabdfadfba044d4707a0b487a7c40 https://doi.org/10.1016/0375-9474(96)00115-7 Zobrazit plný text záznamu Full Text from ScienceDirect