THE TRANSPORT COEFFICIENTS OF LARGE SCALE NUCLEAR COLLECTIVE MOTION

Abstract

An approach to the description of slow collective motion at finite excitations based on the linear response theory and locally harmonic approximation is discussed. The method relies on the assumption that the nuclear many-body Hamiltonian can be approximated by a one-body Hamiltonian which in parametric way depends on the collective variables (deformation parameters) and allows for the account of the shell effects, pairing correlation, angular rotation. Special attention is paid to the removal of spurious contributions caused by the violation of the conservation laws. As an application of the theory, the microscopic transport coefficient are used for the description of reaction 18O + 208 Pb within the Langevin approach.