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.

Examining the cooling of hot nuclei / H., Xi; M., Huang; W., Lynch; S., Gaff; C., Gelbke; T., Glasmacher; G., Kunde; L., Martin; C., Montoya; S., Pratt; M., Tsang; W., Friedman; P., Milazzo; M., Azzano; Margagliotti, Giacomo; Rui, Rinaldo; G., Vannini; N., Colonna; L., Celano; G., Tagliente; M., D’Agostino; M., Bruno; M., Fiandri; F., Gramegna; A., Ferrero; I., Iori; A., Moroni; F., Petruzzelli; P., Mastinu. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - STAMPA. - 57:(1998), pp. R462-R465. [10.1103/PhysRevC.57.R462]

Examining the cooling of hot nuclei

MARGAGLIOTTI, GIACOMO;RUI, RINALDO;
1998-01-01

Abstract

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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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2559801
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