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Indirect spin-orbit K splittings in strontium

Journal Article · · Physical Review. A
; ;  [1]
  1. Department of Physics, University of Virginia, Charlottesville, Virginia 22904 (United States)
We use delayed field ionization to observe the microwave resonance transitions of Sr from 5snf to 5sng, 5snh, and 5sni. The energies of the 5snl, l>3 states are split by the indirect spin-orbit coupling of the Sr core to the Rydberg electron, producing the K splittings. From the K splittings we extract the ionic dipole and quadrupole matrix elements, <5s|r|5p>=3.65(25)a{sub 0} and <5s|r{sup 2}|4d>=12(14)a{sub 0}{sup 2}. From the dipole matrix element we obtain the dipole polarizability of Sr{sup +}. With the dipole polarizability and the quantum defect differences of adjacent l states, we can determine the Sr{sup +} quadrupole polarizability. The dipole and quadrupole polarizabilities of Sr{sup +} are {alpha}{sub d}=86(11)a{sub 0}{sup 3} and {alpha}{sub q}=1.1x10{sup 3}(10)a{sub 0}{sup 5}, respectively.
OSTI ID:
21313148
Journal Information:
Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 79; ISSN 1050-2947; ISSN PLRAAN
Country of Publication:
United States
Language:
English