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Examining the cooling of hot nuclei
Author(s) -
H. Xi,
M. J. Huang,
W. G. Lynch,
S. J. Gaff,
C. K. Gelbke,
T. Glasmacher,
G. J. Kunde,
L. Martin,
C. P. Montoya,
Scott Pratt,
M. B. Tsang,
W. A. Friedman,
P. M. Milazzo,
M. Azzano,
G. V. Margagliotti,
R. Rui,
G. Vannini,
N. Colonna,
L. Celano,
G. Tagliente,
M. D’Agostino,
M. Bruno,
M. L. Fiandri,
F. Gramegna,
A. Ferrero,
I. Iori,
A. Moroni,
F. Petruzzelli,
P. Mastinu
Publication year - 1998
Publication title -
physical review c
Language(s) - English
Resource type - Journals
eISSN - 1089-490X
pISSN - 0556-2813
DOI - 10.1103/physrevc.57.r462
Subject(s) - excited state , spectral line , helium , atomic physics , kinetic energy , isotope , evaporative cooler , hydrogen , physics , nuclear physics , thermodynamics , quantum mechanics , astronomy
Energy spectra have been measured for helium and hydrogen isotopes emitted from highly excited residues produced in central 129Xe + natCu collisions at E/A=30 MeV. The observed differences between the spectra for 3He and 4He nuclei can be attributed to the time dependent evaporative cooling of the residues. This cooling dynamics is also reflected in a characteristic dependence of isotope ratios on the kinetic energy of the emitted particles in reasonable agreement with present evaporative models

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