Light-Ion-Induced Multifragmentation: The ISiS Project

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 pi detector array. Measurements were performed with 5-15 GeV/c p, pbar, and pion beams incident on ${}^{197}$Au and 2-5 GeV ${}^3$He incident on ${}^{nat}$Ag and ${}^{197}$Au 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 per 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.

67 pages, 44 figures, all included in tar file

References in corpus (20)

• Caloric curves and critical behavior in nuclei
• Negative heat capacity in the critical region of nuclear fragmentation: an experimental evidence of the liquid-gas phase transition
• Determination of the Mean-Field Momentum-Dependence using Elliptic Flow
• Central Collisions of Au on Au at 150, 250 and 400 A MeV
• The liquid to vapor phase transition in excited nuclei
• Signals for a Transition from Surface to Bulk Emission in Thermal Multifragmentation
• Event-by-Event Analysis of Proton-Induced Nuclear Multifragmentation: Determination of Phase Transition Universality-Class in System with Extreme Finite-Size Constraints
• Comparative Study of Multifragmentation of Gold Nuclei Induced by Relativistic Protons, ${}^4$He, and ${}^{12}$C
• The Caloric Curve for Mononuclear Configurations
• Caloric Curves and Nuclear Expansion
• Thermal excitation of heavy nuclei with 5-15 GeV/c antiproton, proton and pion beams
• The complement: a solution to liquid drop finite size effects in phase transitions
• Nuclear multifragmentation, percolation and the Fisher Droplet Model: common features of reducibility and thermal scaling
• Source size scaling of fragment production in projectile breakup
• The three-dimensional Ising model: A paradigm of liquid-vapor coexistence in nuclear multifragmentation
• Thermally-induced expansion in the 8 GeV/c ${\pi }^{-}$ + ${}^{197}$Au reaction
• Interplay of initial deformation and Coulomb proximity on nuclear decay
• Tracking the phase-transition energy in disassembly of hot nuclei
• Caloric curve of 8 GeV/c negative pion and antiproton + Au reactions
• Effects of in-medium cross-sections and optical potential on thermal-source formation in p+197Au reactions at 6.2-14.6 GeV/c

Cited by in corpus (19)

• Nuclear multifragmentation and phase transition for hot nuclei
• Isospin dependent multifragmentation of relativistic projectiles
• Measurement of the complete nuclide production and kinetic energies of the system 136Xe + hydrogen at 1 GeV per nucleon
• Statistical approach for supernova matter
• Liquid-Gas phase transition in nuclei
• Thermal and Chemical Freeze-out in Spectator Fragmentation
• Coincidence measurement of residues and light particles in the reaction 56Fe+p at 1 GeV per nucleon with SPALADIN
• Frustrated fragmentation and re-aggregation in nuclei: a non-equilibrium description in spallation
• New method for measuring longitudinal fuctuations and directed flow in ultrarelativistic heavy ion reactions
• Variation of nonequilibrium processes in p+Ni system with beam energy
• Critical parameters of consistent relativistic mean-field models
• Intermediate-mass fragments from fission and multifragmentation in the spallation of 136Xe
• Monopole oscillations in light nuclei with a molecular dynamics approach
• Non-equilibrium emission of complex fragments from p+Au collisions at 2.5 GeV proton beam energy
• The elusiveness of multifragmentation footprints in 1-GeV proton-nucleus reactions
• New scalings in nuclear fragmentation
• Theoretical Study of Isotope Production in The Peripheral Heavy-ion Collision 136Xe + Pb at 1 GeV/nucleon
• Centrality dependence of the thermal excitation-energy deposition in 8-15 GeV/c hadron-Au reactions
• Analysis of critical parameters for nonrelativistic models in symmetric nuclear matter