Light-ion-induced multifragmentation: The ISiS project Academic Article uri icon

abstract

  • An extensive study of GeV light-ion-induced multifragmentation and its possible interpretation in terms of a nuclear liquid-gas phase transition has been performed with the Indiana Silicon Sphere (ISiS) 4 π detector array. Measurements were performed with 5-15 GeV/c p, over(p, -), and π- beams incident on 197Au and 2-5 GeV 3He incident on natAg and 197Au targets. Both the reaction dynamics and the subsequent decay of the heavy residues have been explored. The data provide evidence for a dramatic change in the reaction observables near an excitation energy of E* / A = 4 - 5 MeV / residue nucleon. In this region, fragment multiplicities and energy spectra indicate emission from an expanded/dilute source on a very short time scale (20-50 fm/c). These properties, along with caloric curve and scaling-law behavior, yield a pattern that is consistent with a nuclear liquid-gas phase transition. © 2006 Elsevier B.V. All rights reserved.

altmetric score

  • 3

author list (cited authors)

  • Viola, V. E., Kwiatkowski, K., Beaulieu, L., Bracken, D. S., Breuer, H., Brzychczyk, J., ... Yoder, N. R.

citation count

  • 33

publication date

  • November 2006