Nuclear Theory·nucl-th

Tuesday·August 4, 2015

9 papers—3 primary·6 cross-listed

01
Four-body calculation of elastic deuteron-deuteron scattering
A. Deltuva · A. C. Fonseca
Fully converged calculations of deuteron-deuteron elastic scattering observables are performed at energies above three- and four-body breakup threshold. Differential cross sections and analyzing powers are obtained using realistic nucleon-nucleon force models together with the Coulomb repulsion between protons. For all observables we find a very reasonable agreement with the available experimental data limited to deuteron beam energies up to 25.3 MeV.
nucl-thnucl-exPRC(2015)·19 citations
02
Examining the stability of thermally fissile Th and U isotopes
Bharat Kumar · S. K. Biswal · S. K. Singh · S. K. Patra
The properties of recently predicted thermally fissile Th and U isotopes are studied within the framework of relativistic mean field (RMF) approach using axially deformed basis. We calculated the ground, first intrinsic excited state and matter density for highly neutron-rich thorium and uranium isotopes. The possible modes of decay like $α$ -decay and $β$ -decay are analyzed. We found that the neutron-rich isotopes are stable against $α$ -decay, however they are very much unstable against $β$ -decay. The life time of these nuclei predicted to be tens of second against $β$ -decay. If these nuclei utilize before their decay time, a lots of energy can be produced within the help of multi-fragmentation fission. Also, these nuclei have a great implication in astrophysical point of view. The total nucleonic densities distribution are calculated, from which the clusters inside the parent nuclei are determined. %Most of the thorium isotopes are $α$ emitters, where as some %of them have short half-lives. In some cases, we found the isomeric states with energy range from 2 to 3 MeV and three minima in the potential energy surface of $^{228 - 230}$ Th and $^{228 - 234}$ U isotopes.
nucl-thPRC(2015)·11 citations
03
Woods-Saxon equivalent to a double folding potential
A. S. Freitas · L. Marques · X. X. Zhang · M. A. Luzio · P. Guillaumon · R. Pampa Condori · R. Lichtenthäler
A Woods-Saxon equivalent to a double folding potential in the surface region is obtained for the heavy-ion scattering potential. The Woods-Saxon potential has fixed geometry and was applied as a bare potential in the analysis of experimental data of several systems. A new analytical formula for the position and height of the Coulomb barrier is presented, which reproduces the results obtained using double folding potentials. This simple formula has been applied to estimate the fusion cross section above the Coulomb barrier. A comparison with experimental data is presented.
nucl-thBraz.J.Phys.(2016)·21 citations

Affiliations

first authorsco-authorsvia INSPIRE

Four-body calculation of elastic deuteron-deuteron scattering

Examining the stability of thermally fissile Th and U isotopes

Woods-Saxon equivalent to a double folding potential

Affiliations