New dynamical pair breaking effect

Abstract

A dynamical pair breaking effect is evidenced at very low excitation energies. For this purpose, a new set of time-dependent coupled channel equations for pair-breaking in superfluid systems are deduced from the variational principle. These equations give the probability to destroy or to create a Cooper pair under the action of some perturbations or when the mean field varies in time. The odd-even effect in fission is investigated within the model as an example. For this purpose, the time-dependent probability to find the system in a seniority-one or in a seniority-two state is restricted in the sense that the perturbations are considered only in the avoided crossing regions.

6 pages, 3 figures

References in corpus (4)

• Time Dependent Pairing Equations for Seniority One Nuclear Systems
• Solving the two-center nuclear shell-model problem with arbitrarily-orientated deformed potentials
• Fine structure of alpha decay in odd nuclei
• Threshold Resonant Structure of the 232Th Neutron-Induced Fission Cross Section

Cited by in corpus (6)

• Energy partition in low energy fission
• Influence of complete energy sorting on the characteristics of the odd-even effect in fission-fragment element distributions
• Microscopic description of Cf-252 cold fission yields
• Cranking mass parameters for fission
• Microscopic description of the odd-even effect in cold fission
• Experimental evidence of the effect of nuclear shells on fission dissipation and time