Electric Quadrupole Moments of the D States of AlkalineEarthMetal Ions
Abstract
The electric quadrupole moment for the 4dD5/22 state of Sr+88; one of the most important candidates for an optical clock, has been calculated using the relativistic coupledcluster theory. This is the first application of this theory to determine atomic electric quadrupole moments. The result of the calculation is presented and the important manybody contributions are highlighted. The calculated electric quadrupole moment is (2.94±0.07)ea_{0}^{2}, where a_{0} is the Bohr radius and e the electronic charge while the measured value is (2.6±0.3)ea_{0}^{2}. This is so far the most accurate determination of the electric quadrupole moment for the above mentioned state. We have also calculated the electric quadrupole moments for the metastable 4dD3/22 state of Sr+88 and for the 3dD3/2,5/22 and 5dD3/2,5/22 states of Ca+43 and Ba+138, respectively.
 Publication:

Physical Review Letters
 Pub Date:
 May 2006
 DOI:
 10.1103/PhysRevLett.96.193001
 Bibcode:
 2006PhRvL..96s3001S
 Keywords:

 31.15.Ar;
 06.30.Ft;
 31.15.Dv;
 32.10.Dk;
 Ab initio calculations;
 Time and frequency;
 Coupledcluster theory;
 Electric and magnetic moments polarizability