Diffusion coefficients in coordinate in density matrix description of non-equilibrium quantum processes

The general form of the master equation for open quantum systems is used to calculate the density matrix for selected problems of nuclear physics. We investigate the influence of transport coefficients on the sub-barrier proc esses for double-well and metastable potentials. The irradiation spectra an d the penetrability through barriers strongly depend on friction and diffus ion in coordinate. (C) 1999 Elsevier Science B.V. All rights reserved.