arXiv subjects

V. I. Isakov

Publications and source records attributed to V. I. Isakov.

7 recordsLinked to original sources

arXiv2018

Beta - and gamma-decay transition rates in the two-group shell model

In the framework of the two-group configuration model we obtain formulas for the reduced transition rates for beta- and gamma-transitions in even-even, odd-odd, even-odd, and odd-even nuclei. We explored dependencies of the transition rates on the occupancies of the involved subshells, as well as on the spin values of the initial and final states. The obtained formulas are useful for the qualitative spectroscopic analysis of experimental data, particulary in the regions of magicity, including the regions of the "remote" nuclei.

nucl-th↗

arXiv2017

On the properties of the $^{229}$Th isotope

Electromagnetic properties of the deformed neutron-odd nucleus $^{229}$Th are investigated in the framework of the unified model, with primary emphasis upon the properties of the low-lying isomeric state.

nucl-th↗

arXiv2016

Spectra and Electromagnetic Properties of the Neutron-Excess Nucleus $^{132}$In

Spectra of levels and transition rates are calculated for the odd--odd particle--hole neutron excess nucleus $^{132}$In in the framework of the RPA approach.

nucl-th↗

arXiv2010

On the possible mixing of the electron capture and the positron emission channels in nuclear decay

On the basis of the idea of mixing (interaction) between the electron capture and the positron emission channels in the β^+ decay in the cases when both channels are energetically allowed, we attempt to explain oscillations of the K-capture rates that were possibly seen in the recent experiment.

nucl-th↗

arXiv2002

On the polarization effects in (p,n) reactions between the A=48 isobarical states

Isotopical dependence of spin-orbit splitting discovered by us in spectra of heavy nuclei close to doubly magic ones is checked in polarization effects arising in charge exchange (p,n) reaction between the A=48 isobarical states.

nucl-th↗

arXiv2002

On the difference between proton and neutron spin-orbit splittings in nuclei

The latest experimental data on nuclei at $^{132}$Sn permit us for the first time to determine the spin-orbit splittings of neutrons and protons in identical orbits in this neutron-rich doubly-magic region and compare the case to that of $^{208}$Pb. Using the new results, which are now consistent for the two neutron-rich doubly magic regions, a theoretical analysis defines the isotopic dependence of the mean field spin-orbit potential and leads to a simple explicit expression for the difference between the spin-orbit splittings of neutrons and protons. The isotopic dependence is explained in the framework of different theoretical approaches.

nucl-th↗

arXiv2001

On the isospin dependence of the mean spin-orbit field in nuclei

By the use of the latest experimental data on the spectra of $^{133}$Sb and $^{131}$Sn and on the analysis of properties of other odd nuclei adjacent to doubly magic closed shells the isospin dependence of a mean spin-orbit potential is defined. Such a dependence received the explanation in the framework of different theoretical approaches.

nucl-th↗