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Atomic Clock States of Thulium have Near-Zero Electric Quadrupole Moment

Authors :
Fleig, Timo
Publication Year :
2023

Abstract

A method for highly accurate calculations of atomic electric quadrupole moments (EQM) is presented, using relativistic general-excitation-rank configuration interaction wavefunctions based on Dirac spinors. Application to the clock transition states of the thulium atom employing up to full Quadruple excitations for the atomic wavefunction yields a final value of $Q_{zz}({^2F}_{7/2}) = 0.07 \pm 0.07$ a.u., establishing that the thulium electronic ground state has an exceptionally small EQM. A detailed analysis of this result is presented which has implications for EQMs of other atoms with unpaired $f$ electrons.<br />Comment: 16 pages, 1 figure

Subjects

Subjects :
Physics - Atomic Physics

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2302.01840
Document Type :
Working Paper