505 research outputs found
An ab initio theory of double odd-even mass differences in nuclei
Two aspects of the problem of evaluating double odd-even mass differences D_2
in semi-magic nuclei are studied related to existence of two components with
different properties, a superfluid nuclear subsystem and a non-superfluid one.
For the superfluid subsystem, the difference D_2 is approximately equal to
2\Delta, the gap \Delta being the solution of the gap equation. For the
non-superfluid subsystem, D_2 is found by solving the equation for two-particle
Green function for normal systems. Both equations under consideration contain
the same effective pairing interaction. For the latter, the semi-microscopic
model is used in which the main term calculated from the first principles is
supplemented with a small phenomenological addendum containing one
phenomenological parameter supposed to be universal for all medium and heavy
atomic nuclei.Comment: 7 pages, 10 figures, Report at Nuclear Structure and Related Topics,
Dubna, Russia, July 2 - July 7, 201
On Approach for Prognosis of Influence of Mismatch-induced Stresses on the IβV Characteristics of p-n-junctions Manufactured in a Heterostructure
We consider a nonlinear model for analysis of current-voltage characteristic of a p-n-junction, which was manufactured in the framework of a heterostructure with specific configuration by diffusion or ion implantation. We analyzed the model to obtain dependence of the considered current-voltage characteristic on missmatch-induced stresses in the framework of the heterostructure. We also consider an analytical approach for analysis of mass and heat transport during the considered processes with account their nonlinearity and missmatch induced stresses as well changes of parameters of these in space and time
Homogenization of attractors of non-linear evolutionary equations
The paper is devoted to the homogenization of non{linear evolutionary equations in domains with "traps"
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