Hyperfine Structure & Nuclear Moments
Overview
Measurement of hyperfine structure and nuclear moments of neutron-deficient thallium isotopes using the focusing atomic beam magnetic resonance (FABM) method. This research contributes to the understanding of nuclear structure and electromagnetic properties of exotic nuclei.
The FABM technique provides high-precision measurements of nuclear spin, magnetic dipole, and electric quadrupole moments.
Nuclear Moments of Neutron-Deficient Thallium Isotopes
Abstract
Hyperfine structure measurements of neutron-deficient thallium isotopes have been performed using the focusing atomic beam magnetic resonance (FABM) method. Ground-state nuclear spins, magnetic dipole moments, and electric quadrupole moments have been determined with high precision.
Key Results
The measured magnetic moments show systematic deviations from single-particle estimates, indicating the importance of core polarization effects. Quadrupole moment data suggest moderate deformation in the neutron-deficient thallium region.
$$ \Delta E_{\text{hfs}} = A , \mathbf{I} \cdot \mathbf{J} + B , \frac{3(\mathbf{I} \cdot \mathbf{J})^2 + \frac{3}{2}(\mathbf{I} \cdot \mathbf{J}) - I(I+1)J(J+1)}{2I(2I-1)2J(2J-1)} $$