687 research outputs found
Nuclear Model of Binding alpha-particles
The model of binding alpha-particles in nuclei is suggested. It is shown good
(with the accuracy of 1-2%) description of the experimental binding energies in
light and medium nuclear systems. Our preliminary calculations show enhancement
of the binding energy for super heavy nuclei with Z~120.Comment: 4 pages, 2 figures, Will be puplished in World Scientific as Procs.
Int. Symposium on Exotic Nuclei, "EXON - 2004", July 5 - 12, 2004, Peterhof,
Russi
Universal Angular Probability Distribution of Three Particles near Zero Energy Threshold
We study bound states of a 3--particle system in described by
the Hamiltonian ,
where the particle pair has a zero energy resonance and no bound
states, while other particle pairs have neither bound states nor zero energy
resonances. It is assumed that for a converging sequence of coupling constants
the Hamiltonian has a sequence of
levels with negative energies and wave functions , where the
sequence totally spreads in the sense that for all . We
prove that for large the angular probability distribution of three
particles determined by approaches the universal analytical
expression, which does not depend on pair--interactions. The result has
applications in Efimov physics and in the physics of halo nuclei
The Quest for the Heaviest Uranium Isotope
We study Uranium isotopes and surrounding elements at very large neutron
number excess. Relativistic mean field and Skyrme-type approaches with
different parametrizations are used in the study. Most models show clear
indications for isotopes that are stable with respect to neutron emission far
beyond N=184 up to the range of around N=258.Comment: 4 pages, 5. figure
Chain configurations in light nuclei
The model of nuclear matter built from alpha-particles is proposed. The
strong deformed shape for doubly even N=Z nuclides from carbon to magnesium has
been determined according to this model. In this paper we undertake very simple
approach, which assumes the existence of low lying chain configurations.Comment: 6 pages, 5 figure
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