Charge and angular distributions as well as sequential decay and. gamma. -ray emission in heavy ion collisions viewed in the light of the diffusion model

Conference · Mon Aug 01 04:00:00 EDT 1977

OSTI ID:7081896

Moretto, L G

The hierarchy of the collective relaxation times in heavy ion reactions is briefly reviewed. An improved diffusion model is introduced and applied to interpret the fragment Z and angular distributions for some typical reactions. The equilibrium in the neutron-to-proton ratio as well as the sharing of the excitation energy between fragments is studied by a coincidence method which leads to the measurement of the charge, mass and mean number of nucleons emitted by each fragment. The final destiny of the dissipative energy is determined by measuring the atomic number of two coincident fragments, thus obtaining the missing charge as a function of bombarding energy and the Q of the reaction. The sequential fission probability of the heavy recoil is established as a function of the Z and kinetic energy of the light partner. The out-of-plane angular distribution of the fission fragments is correlated with the fissionability and interpreted in terms of various sources of angular momentum misalignment. The ..gamma..-ray multiplicities and the ..gamma..-ray angular distributions associated with deep inelastic event are discussed in terms of the angular momentum transfer and in terms of the diffusion model.

• Research Organization: California Univ., Berkeley (USA). Lawrence Berkeley Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7081896
• Report Number(s): LBL-6587; CONF-770927-2
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
ARGON 40 REACTIONS
BARYONS
CHARGE DISTRIBUTION
CHARGED-PARTICLE REACTIONS
COINCIDENCE METHODS
CORRELATIONS
COUNTING TECHNIQUES
DEEP INELASTIC SCATTERING
DISTRIBUTION
ELEMENTARY PARTICLES
ELEMENTS
EMISSION
ENERGY LOSSES
EQUILIBRIUM
FERMIONS
FISSION
FISSION FRAGMENTS
GAMMA SPECTRA
GOLD 197 TARGET
HADRONS
HEAVY ION REACTIONS
INELASTIC SCATTERING
INTERACTIONS
KRYPTON 86 REACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MASS
MATHEMATICAL MODELS
METALS
MULTIPLICITY
NEON 20 REACTIONS
NUCLEAR FRAGMENTS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PROBABILITY
RECOILS
RELAXATION
SCATTERING
SILVER
SPECTRA
TARGETS
TRANSITION ELEMENTS