Non-equilibrium statistical mechanical approach for describing heavy ion reactions

Thesis/Dissertation · Mon Jan 01 04:00:00 EST 1979

OSTI ID:6297428

Sventek, J S

With the availability of heavy-ion projectiles (A > 4) at low to intermediate energies (4 < E/A < 10), products showing various stages of relaxation for certain macroscopic variables (center-of-mass energy, orbital angular momentum, etc.) were produced in various reactions. The distributions for these macroscopic variables showed a correlation between the stage of relaxation reached and the net amount of mass transfer which had occurred in the reaction. There was also evidence that there was an asymmetry in the number of net transfers necessary for complete relaxation between stripping ad pickup reactions. A model for describing the time-evolution of these reactions has been formulated, the keystone of which is a master-equation approach for describing the time-dependence of the mass-asymmetry. This, coupled with deterministic equations of motion for the other macroscopic coordinates in the reaction lead to calculated distributions which provide an excellent qualitative description of these reactions, and, in some cases, quantitatively reproduce the experimental data quite well.

• Research Organization: California Univ., Berkeley (USA)
• OSTI ID: 6297428
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions &amp; Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
CHARGED-PARTICLE REACTIONS
DISTRIBUTION
ENERGY
ENERGY RANGE
HEAVY ION REACTIONS
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 01-10
NUCLEAR REACTIONS
ORBITAL ANGULAR MOMENTUM
STATISTICAL MODELS