Reduction in nuclear size and quadrupole deformation of high-spin isomers of 127,129In

Abstract

We employed laser spectroscopy of atomic transitions to measure the nuclear charge radii and electromagnetic properties of the high-spin isomeric states in neutron-rich indium isotopes (Z = 49) near the closed proton and neutron shells at Z = 50 and N = 82. Our data reveal a reduction in the nuclear charge radius and intrinsic quadrupole moment when protons and neutrons are fully aligned in 129In(N = 80), to form the high spin isomer. Such a reduction is not observed in 127In(N = 78), where more complex configurations can be formed by the existence of four neutron-holes. These observations are not consistently described by nuclear theory.

Accepted in Physical Review Letters

References in corpus (14)

• Improved nuclear matter calculations from chiral low-momentum interactions
• A nucleus-dependent valence-space approach to nuclear structure
• Ab initio predictions link the neutron skin of ${}^{208}$Pb to nuclear forces
• In-Medium Similarity Renormalization Group for Open-Shell Nuclei
• Systematics of E2 strength in the sd-shell with the valence-space in-medium similarity renormalization group
• Variational multiparticle-multihole configuration mixing method applied to pairing correlations in nuclei
• Properties of odd nuclei and the impact of time-odd mean fields: A systematic Skyrme-Hartree-Fock analysis
• Impact of two-body currents on magnetic dipole moments of nuclei
• Isomerism in the "south-east" of ${}^{132}$Sn and a predicted neutron-decaying isomer in ${}^{129}$Pd
• Solution of universal nonrelativistic nuclear DFT equations in the Cartesian deformed harmonic-oscillator basis. (IX) HFODD (v3.06h): a new version of the program
• Nuclear DFT analysis of electromagnetic moments in odd near doubly magic nuclei
• Electromagnetic Properties of Indium Isotopes Elucidate the Doubly Magic Character of ${}^{100}$Sn
• Surprising charge-radius kink in the Sc isotopes at N=20
• Isotope-shift factors with quantum electrodynamics effects for many-electron systems: A study of the nuclear charge radius of ${}^{26m}$Al