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Phys. Rev. C 57, R462 - R465 (1998)

Examining the cooling of hot nuclei

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H. Xi et al. (Miniball/Multics Collaboration)
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Rapid Communication Received 14 May 1997

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.


©1998 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.57.R462
DOI: 10.1103/PhysRevC.57.R462
PACS: 25.70.Pq

* Present address: Laboratoire de Physique Subatomique, 44070 Nantes Cedex 03, France.
† Present address: Merrill Lynch, World Financial Center, North Tower, New York, NY 10281.
‡ Present address: CNEA, Buenos Aires, Argentina.

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