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Atomic Radii and Effective Nuclear Charge

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Updated: May 14, 2026

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
10:42

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Published on: May 3, 2019

Charge radius isotope shift across the N=126 shell gap.

P M Goddard1, P D Stevenson, A Rios

  • 1Department of Physics, University of Surrey, Guildford, United Kingdom.

Physical Review Letters
|February 5, 2013
PubMed
Summary
This summary is machine-generated.

The kink in neutron-rich isotopes

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Related Experiment Videos

Last Updated: May 14, 2026

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Published on: May 3, 2019

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
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High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
08:42

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

Published on: October 10, 2014

Area of Science:

  • Nuclear physics
  • Atomic physics

Background:

  • Neutron-rich isotopes near the N=126 shell closure exhibit a kink in their charge radius shifts.
  • Understanding this phenomenon is crucial for nuclear structure models.

Purpose of the Study:

  • To investigate the underlying causes of the kink in charge radius shifts for neutron-rich even isotopes.
  • To determine the role of specific orbitals in nuclear structure and properties.

Main Methods:

  • Analysis of Skyrme force interactions.
  • Examination of neutron orbital occupation, specifically the 1i(11/2) orbital.
  • Assessment of proton orbital changes and single-particle energies.

Main Results:

  • The kink is primarily determined by the occupation of the neutron 1i(11/2) orbital beyond N=126.
  • This occupation influences deeply-bound proton orbitals with a principal quantum number of 1.
  • Discrepancies arise between experimental single-particle energies and mean-field predictions.

Conclusions:

  • Skyrme force performance in reproducing isotope shifts depends on neutron orbital occupation.
  • Nuclear correlations must be considered, or mean-field single-particle energies may not perfectly match experimental values.