Statistical evolution of isotope composition of nuclear fragments

Abstract

Calculations within the statistical multifragmentation model show that the neutron content of intermediate mass fragments can increase in the region of liquid-gas phase transition in finite nuclei. The model predicts also inhomogeneous distributions of fragments and their isospin in the freeze-out volume caused by an angular momentum and external long-range Coulomb field. These effects can take place in peripheral nucleus-nucleus collisions at intermediate energies and lead to neutron-rich isotopes produced in the midrapidity kinematic region.

14 pages with 4 figures. GSI preprint, Darmstadt, 2000

References in corpus (8)

• Phase Transitions in Warm, Asymmetric Nuclear Matter
• Thermodynamical features of multifragmentation in peripheral Au + Au Collisions at 35 A.MeV
• Statistical Multifragmentation in Central Au+Au Collisions at 35 MeV/u
• Multifragmentation in Xe(50A MeV)+Sn Confrontation of theory and data
• Asymmetry Effects on Nuclear Fragmentation
• Partitioning Composite Finite Systems
• Multifragmentation of charge asymmetric nuclear systems
• Isotopic Composition of Fragments in Nuclear Multifragmentation

Cited by in corpus (54)

• Density dependence of the symmetry energy and the nuclear equation of state: A Dynamical and Statistical model perspective
• Isoscaling in Light-Ion Induced Reactions and its Statistical Interpretation
• Isotopic Scaling and the Symmetry Energy in Spectator Fragmentation
• Characteristics of the fragments produced in central collisions of 129Xe+ natSn from 32 to 50 AMeV
• Isospin dependent multifragmentation of relativistic projectiles
• Statistical approach for supernova matter
• Production of hypernuclei in multifragmentation of nuclear spectator matter
• Monte-Carlo generator of heavy ion collisions DCM-SMM
• Formation of hot heavy nuclei in supernova explosions
• Isospin and symmetry energy effects on nuclear fragment production in liquid-gas type phase transition region
• Symmetry energy and the isoscaling properties of the fragments produced in ${}^{40}$Ar, ${}^{40}$Ca + ${}^{58}$Fe, ${}^{58}$Ni reactions at 25 $-$ 53 MeV/nucleon
• Tracing the evolution of the symmetry energy of hot nuclear fragments from the compound nucleus towards multifragmentation
• Progress of Quantum Molecular Dynamics model and its applications in Heavy Ion Collisions
• Production of Neutron-rich Heavy Residues and the Freeze-out Temperature in the Fragmentation of Relativistic 238U Projectiles Determined by the Isospin Thermometer
• Nuclear fragmentation reactions in extended media studied with Geant4 toolkit
• Comparative Study of Multifragmentation of Gold Nuclei Induced by Relativistic Protons, ${}^4$He, and ${}^{12}$C
• The critical temperature of nuclear matter and fragment distributions in multifragmentation of finite nuclei
• Statistical Multifragmentation of Non-Spherical Expanding Sources in Central Heavy-Ion Collisions
• Multifragmentation reactions and properties of hot stellar matter at subnuclear densities
• Modification of surface energy in nuclear multifragmentation
• Fragmentation in Peripheral Heavy-Ion Collisions: from Neck Emission to Spectator Decays
• Mass Parameterizations and Predictions of Isotopic Observables
• Statistical description of nuclear break-up
• Bayesian evaluation of residual production cross sections in proton induced spallation reactions
• Particle and light fragment emission in peripheral heavy ion collisions at Fermi energies
• A Bayesian-Neural-Network Prediction for Fragment Production in Proton Induced Spallation Reaction
• N/Z Dependence of Projectile Fragmentation
• Multifragmentation and the symmetry term of the nuclear equation of state
• Neutron Density Distributions of Neutron-Rich Nuclei Studied with the Isobaric Yield Ratio Difference
• Symmetry energy of fragments produced in multifragmentation
• Neutron-rich rare isotope production with stable and radioactive beams in the mass range A=40-60 at beam energy around 15 MeV/nucleon
• Analysis of fragment yield ratios in the nuclear phase transition
• The decay time scale for highly excited nuclei as seen from asymmetrical emission of particles
• Finite-size scaling phenomenon of nuclear liquid--gas phase transition probes
• Isospin fluctuations in spinodal decomposition
• Evolution of the statistical disintegration of finite nuclei toward high energy
• Mass and Isospin Effects in Multifragmentation
• Fragment Isospin as a Probe of Heavy-Ion Collisions
• The role of bulk energy in nuclear multifragmentation
• Sensitivity study of experimental measures for the nuclear liquid-gas phase transition in the statistical multifragmentation model
• Comparison of Statistical Multifragmentation Model simulations with Canonical Thermodynamical Model results: a few representative cases
• Caloric curve of 8 GeV/c negative pion and antiproton + Au reactions
• Nuclear expansion and symmetry energy of hot nuclei
• Neutron-rich rare isotope production from projectile fission of heavy beams in the energy range of 20 MeV/nucleon
• Isotopic effects in multifragmentation and the nuclear equation of state
• Isotopic composition of fragments in multifragmentation of very large nuclear systems: effects of the chemical equilibrium
• Improvement on Fermionic properties and new isotope production in molecular dynamics simulations
• Isospin compositions of correlated sources in the Fermi energy domain
• Statistical analysis of experimental multifragmentation events in ${}^{64}$Zn + ${}^{112}$Sn at 40 MeV/nucleon
• Density dependence of isospin observables in spinodal decomposition
• Investigation of the nuclear liquid-gas phase transition in the static AMD
• A New Model of Intranuclear Neutron-Antineutron Transformations in ${}_8^{16}$O
• Determination of the freeze-out temperature by the isospin thermometer
• Effects of the magnetic field on the spallation reaction implemented by BUU coupled with a phase-space coalescence afterburner