abstract

• We observe the electric-dipole forbidden 7s→8s transition in the francium isotopes Fr208-211 and Fr213 using a two-photon excitation scheme. We collect the atoms online from an accelerator and confine them in a magneto-optical trap for the measurements. In combination with previous measurements of the 7s→7p1/2 transition we perform a King plot analysis. We compare the thus-determined ratio of the field shift constants (1.228 ± 0.019) to results obtained from new ab initio calculations (1.234 ± 0.010). © 2018 American Physical Society.

authors

• Aubin S.
• Behr J.A.
• Dehart A.C.
• Dzuba V.A.
• Flambaum V.V.
• Gorelov A.
• Gwinner G.
• Gómez García Eduardo
• Kalita M.R.
• Kossin M.J.
• Orozco L.A.
• Pearson M.R.
• Safronova M.S.

publication date

• 2018-01-01

funding provided via

• Australian Research Council, ARC  Grant
• Consejo Nacional de Ciencia y Tecnología, CONACYT  Grant
• Fulbright Canada, FC  Grant
• National Science Foundation, NSF: 1307536, PHY-1307536  Grant
• Natural Sciences and Engineering Research Council of Canada, NSERC  Grant
• Norsk Sykepleierforbund, NSF  Grant
• U.S. Department of Energy, DOE: PHY-1620687  Grant
• University of Manitoba, U of M  Grant
• University of New South Wales, UNSW  Grant

published in

• Physical Review A  Journal

keywords

• Electric excitation; Francium; Isotopes; Ab initio calculations; Ab initio theory; Electric dipole; Isotope shifts; Magnetooptical traps; Measurements of; Plot analysis; Two-photon excitations; Calculations

Digital Object Identifier (DOI)

• 10.1103/PhysRevA.97.042507

start page

end page

volume

• 97

issue

• 4