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Temperatures of Exploding Nuclei

V. Serfling et al.
Phys. Rev. Lett. 80, 3928 – Published 4 May 1998
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Abstract

Breakup temperatures in central collisions of 197Au+197Au at bombarding energies E/A=50 to 200 MeV were determined with two methods. Isotope temperatures, deduced from double ratios of hydrogen, helium, and lithium isotopic yields, increase monotonically with bombarding energy from 5 to 12 MeV, in qualitative agreement with a scenario of chemical freeze-out after adiabatic expansion. Excited-state temperatures, derived from yield ratios of states in 4He, 5,6Li, and 8Be, are about 5 MeV, independent of the projectile energy, and seem to reflect the internal temperature of fragments at their final separation from the system.

  • Received 17 December 1997

DOI:https://doi.org/10.1103/PhysRevLett.80.3928

©1998 American Physical Society

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See Also

In Search of Boiling Nuclei

Phys. Rev. Focus 1, 13 (1998)

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Issue

Vol. 80, Iss. 18 — 4 May 1998

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