Journal
PHYSICAL REVIEW A
Volume 82, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.82.012506
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- Chemical Sciences, Geosciences, and Biosciences Division of the Office of Basic Energy Sciences, Office of Science, US Department of Energy
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The fine structure of high-Ln=19 and 20 Rydberg states of Ba+ has been measured precisely using the resonant excitation Stark ionization spectroscopy technique, allowing for a determination of the Ba2+ polarizability: alpha(D)(Ba2+) = 10.75(10) a.u. This result, in combination with an improved model of the K splittings in Ba Rydberg levels, allows for a more precise determination of the Ba+ dipole transition strengths connecting the 6(2)S(1/2) ground state to the 6(2)P(1/2) and 6(2)P(3/2) excited states. The results, in atomic units, are < 6(2)S(1/2) parallel to D parallel to| 6(2)P(1/2)> = 3.3251(21) and < 6(2)S(1/2) parallel to D parallel to| 6(2)P(3/2)> = 4.7017(27).
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