Dresden 2000 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 14: Postersitzung / Theorie
HK 14.32: Poster
Donnerstag, 23. März 2000, 10:15–12:45, B 113
Diffusion coefficient in coordinate in non-equilibrium nuclear processes — •G. Adamian1,2, N. Antonenko1,2, and W. Scheid1 — 1Institut für Theoretische Physik der Uni. Gießen — 2Joint Institute for Nuclear Research, Dubna
The general form of the master equation for open quantum systems is used to calculate the density matrix for problems of nuclear physics [1]. Considering a dinuclear system, we show in a classic investigation with zero diffusion in the coordinate that the violation of the uncertainty relation does not occur only at short initial times but also at later times. Therefore, the classic description of non-equilibrium rare quantum processes could be incorrect. We investigate the influence of transport coefficients on the sub-barrier processes for double-well and metastable potentials. The penetrability through energy barriers as well as irradiation spectra are strongly influenced by friction and diffusion coefficients in coordinate.
[1] G. G. Adamian, N. V. Antonenko, W. Scheid, Nucl. Phys. A645 376 (1999); Phys. Lett. A244 482 (1998); Phys. Lett. A260 39 (1999)