The ground-state magnetic moments of odd-mass Hf isotopes

Open Physics ◽  
2014 ◽  
Vol 12 (12) ◽  
Author(s):  
Hakan Yakut ◽  
Emre Tabar ◽  
A. Kuliev ◽  
Ekber Guliyev
Keyword(s):  
Spin Polarization ◽  
Ground State ◽  
Magnetic Moments ◽  
Random Phase ◽  
Nuclear Model ◽  
Effective Spin ◽  
Quasiparticle Random Phase Approximation ◽  
Polarization Effects ◽  
Intrinsic Magnetic Moment ◽  
Spin Polarization Effects

AbstractIn this paper the Quasiparticle-Phonon Nuclear Model (QPNM), based on QRPA (Quasiparticle Random Phase Approximation) phonons, has been utilized to investigate spin polarization effects on the groundstate magnetic properties such as intrinsic magnetic moment (g K) and effective spin gyromagnetic factor (g seff.) of odd-mass deformed 165–179Hf isotopes with K > 1/2. Investigations of the spin polarization effects of the even core on the magnetic moments show that the spin gyromagnetic factors (g s) of the nucleons in the nucleus differ noticeably from the corresponding values for free nucleons and that the spin-spin interactions play an important role in the re-normalization of g s factors of the odd-mass 165–179Hf isotopes. In addition, some theoretical predictions are presented for the magnetic moments of 165Hf, 167Hf, and 169Hf, whose ground state magnetic moments haven’t been experimentally determined yet.

Effects of the isoscalar and isovector interaction on the ground-state magnetic moments of odd-mass 137–145Ce nuclei

2019 ◽  
Vol 97 (11) ◽  
pp. 1187-1190
Author(s):  
H. Yakut ◽  
E. Tabar ◽  
G. Hoşgör
Keyword(s):  
Ground State ◽  
Magnetic Moments ◽  
The Other ◽  
Spin Interaction ◽  
Nuclear Model ◽  
Isotopic Chain ◽  
Core Polarization ◽  
Polarization Effects ◽  
The Core

A systematic study of the magnetic properties of deformed odd-neutron 137–145Ce isotopes using the microscopic quasiparticle phonon nuclear model (QPNM) has been presented. The QPNM includes residual spin–spin interaction in both isoscalar and isovector channels. The analysis shows that in the isoscalar channel contributions to the magnetic moment coming from the neutron and proton systems practically cancel out each other. On the other hand, in the isovector channel, the coherent contribution coming from the quasiparticle–phonon interactions leads to a spin polarization (core polarization), which is important for determination of the quenched spin gyromagnetic factors (gs). The quenched spin gyromagnetic factors so called [Formula: see text] have been found to range from [Formula: see text] to [Formula: see text] in the odd-mass 137–145Ce isotopic chain, which is similar to its phenomenological value ([Formula: see text] between [Formula: see text] and [Formula: see text]). By taking into consideration the core polarization effects, the available experimental data are satisfactorily reproduced with an accuracy of 0.01μN–0.1μN.

Spin Polarization Effects on O2Dissociation from Heme-O2Adduct

2004 ◽  
Vol 44 (2) ◽  
pp. L57-L59 ◽  
Author(s):  
Muneyuki Tsuda ◽  
Wilson Agerico Diño ◽  
Hideaki Kasai
Keyword(s):  
Spin Polarization ◽  
Polarization Effects ◽  
Spin Polarization Effects

Excited State Magnetic Exchange Interactions Enable Large Spin Polarization Effects

2018 ◽  
Vol 140 (6) ◽  
pp. 2221-2228 ◽  
Author(s):  
Benjamin W. Stein ◽  
Christopher R. Tichnell ◽  
Ju Chen ◽  
David A. Shultz ◽  
Martin L. Kirk
Keyword(s):  
Excited State ◽  
Spin Polarization ◽  
Exchange Interactions ◽  
Magnetic Exchange ◽  
Polarization Effects ◽  
Spin Polarization Effects ◽  
Large Spin

Spin-polarization effects in Cherenkov radiation from electrons

2020 ◽  
Vol 98 (7) ◽  
pp. 660-663
Author(s):  
A.A. Peshkov
Keyword(s):  
Spin Polarization ◽  
Cherenkov Radiation ◽  
Stokes Parameters ◽  
Electron Spin Polarization ◽  
Polarized Electrons ◽  
Small Component ◽  
Polarization Effects ◽  
Spin Polarized ◽  
Linearly Polarized ◽  
Spin Polarization Effects

A quantum electrodynamical theory of Cherenkov radiation emitted by spin-polarized electrons moving in an isotropic medium is developed within the density matrix framework. Special attention is paid to the polarization properties of the emitted photons described by means of Stokes parameters. It is demonstrated that, although the Cherenkov radiation is primarily linearly polarized in the plane containing the direction of observation and the path of the electrons, the photons may have a small component of circular polarization of the order of 3 × 10−6 for electron kinetic energy of 500 keV due to the initial electron spin polarization, whose existence can be confirmed by sensitive measurements in the future.

scholarly journals Analysis of the Intermediate-State Contributions to Neutrinoless Doubleβ−Decays

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
Juhani Hyvärinen ◽  
Jouni Suhonen
Keyword(s):  
Excited States ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Form Factors ◽  
Nuclear Model ◽  
Quasiparticle Random Phase Approximation ◽  
Boson Exchange ◽  
Majorana Neutrinos ◽  
Nucleon Form Factors ◽  
Short Range Correlations

A comprehensive analysis of the structure of the nuclear matrix elements (NMEs) of neutrinoless double beta-minus (0νβ-β-) decays to the0+ground and first excited states is performed in terms of the contributing multipole states in the intermediate nuclei of0νβ-β-transitions. We concentrate on the transitions mediated by the light (l-NMEs) Majorana neutrinos. As nuclear model we use the proton-neutron quasiparticle random-phase approximation (pnQRPA) with a realistic two-nucleon interaction based on the Bonn one-boson-exchangeGmatrix. In the computations we include the appropriate short-range correlations, nucleon form factors, and higher-order nucleonic weak currents and restore the isospin symmetry by the isoscalar-isovector decomposition of the particle-particle proton-neutron interaction parametergpp.

Sign in / Sign up

Export Citation Format

Share Document