529 research outputs found
Rotating nuclei at extreme conditions: Cranked Relativistic Mean Field Description
The cranked relativistic mean field (CRMF) theory is applied for the
description of superdeformed (SD) rotational bands observed in Ho. The
question of the structure of the so-called SD band in Er is also
addressed and a brief overview of applications of CRMF theory to the
description of rotating nuclei at extreme conditions is presented.Comment: 4 pages, 1 PostScript figure, LaTex, uses 'espcrc1.sty', to be
published in Proceedings of International Nuclear Physics Conference, Paris,
1998 which will appear in Nuclear Physic
Relative Properties of Smooth Terminating Bands
The relative properties of smooth terminating bands observed in the A~110
mass region are studied within the effective alignment approach. Theoretical
values of are calculated using the configuration-dependent
shell-correction model with the cranked Nilsson potential. Reasonable agreement
with experiment shows that previous interpretations of these bands are
consistent with the present study. Contrary to the case of superdeformed bands,
the effective alignments of these bands deviate significantly from the pure
single-particle alignments of the corresponding orbitals. This
indicates that in the case of smooth terminating bands, the effects associated
with changes in equilibrium deformations contribute significantly to the
effective alignment.Comment: 15 pages, 8 PostScript figures, RevTex, uses 'epsf', submitted to
Nucl. Phys.
Fission of actinides and superheavy nuclei: covariant density functional theory perspective
The current status of the application of covariant density functional theory
to the description of fission barriers in actinides and superheavy nuclei is
reviewed. The achievements and open problems are discussed.Comment: 8 pages, the proceedings of Fifth International conference on
"Fission and properties of neutron-rich nuclei", November 4-10, 2012, Sanibel
Island, USA in pres
Cluster structures, ellipsoidal shapes and nuclear molecules in light A=12-50 nuclei
The transition from cluster structures to extremely elongated ellipsoidal
shapes and nuclear molecules in light nuclei has been
studied within the framework of covariant density functional theory. Nodal
structure of the occupied single-particle states plays a critical role in
microscopic understanding of this transition. This is illustrated by the
analysis of dominant types of single-particle density distributions and their
evolution (from the bottom of nucleonic potential) with deformation and
particle number. The microscopic mechanism of the transition from clustered
structures to ellipsoidal shapes and nuclear molecules and between them is
discussed.Comment: EPJ Web of Conferences 194, 06001 (2018), 6 page
Covariant energy density functionals: the assessment of global performance across the nuclear landscape
The assessment of the global performance of the state-of-the-art covariant
energy density functionals and related theoretical uncertainties in the
description of ground state observables has recently been performed. Based on
these results, the correlations between global description of binding energies
and nuclear matter properties of covariant energy density functionals have been
studied in this contribution.Comment: 4 pages, 2 figures, Contribution to the Proceedings of the
International Nuclear Physics Conference 'Nuclear Structure and Dynamics
III', Portoroz, Slovenia, 201
Soliton propagation and polarisation mode-locking in birefringent optical fibres
Soliton propagation in polarization-preserving fibres is analysed. Based on the coupled nonlinear Schrodinger equations we derive an analytical approximation for such type of soliton propagation. Exploitation of soliton polarization properties for passive mode-locking in fibre lasers is also considered
Description of rotating nuclei in terms of isovector pairing
A systematic investigation of the rotating even-even nuclei in the mass
region has been performed within the frameworks of the Cranked
Relativistic Mean field, Cranked Relativistic Hartree Bogoliubov theories and
cranked Nilsson-Strutinsky approach. Most of the experimental data is well
accounted for in the calculations. The present study suggests that there is
strong isovector -pair field at low spin, the strength of which is defined
by the isospin symmetry. At high spin, the isovector pair field is destroyed
and the data are well described by the calculations assuming zero pairing. No
clear evidence for the existence of the isoscalar -pairing has been
obtained in the present investigation.Comment: 20 pages + 19 figures, submitted to Phys. Rev.
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