Temperatures of Exploding Nuclei
Temperatures of Exploding Nuclei| Authors: | V. Serfling, C. Schwarz, R. Bassini, M. Begemann-Blaich, S. Fritz, S.J. Gaff, C. Groß, G. Immé, I. Iori, U. Kleinevoß, G.J. Kunde, W.D. Kunze, U. Lynen, V. Maddalena, M. Mahi, T. Möhlenkamp, A. Moroni, W.F.J. Müller, C. Nociforo, B. Ocker, T. Odeh, F. Petruzzelli, J. Pochodzalla, G. Raciti, G. Riccobene, F. P. Romano, A. Saija, M. Schnittker, A. Schüttauf, W. Seidel, C. Sfienti, W. Trautmann, A. Trzcinski, G. Verde, A. Wörner, Hongfei Xi, and B. Zwieglinski |
| Published: |
Phys.Rev.Lett 80(1998)3928
Preprint GSI-98-06, January 1998 Preprint nucl-ex/9801006 |
| 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 MeV 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.
PACS numbers: 25.70.Mn, 25.70.Pq, 25.75.-q |
| Paper: |
Postscript
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