Abstract
The spectrum of excitation of Rydberg states of thallium atoms has been investigated using a collimated atomic beam in a two-step isotope selective laser scheme 62P1/2 → 62D3/2 → Tl** in the presence of an electric field with a strength of up to 1.5 kV/cm near the level 16F5/2. The optical transitions 6D3/2 → 18D3/2 and 6D3/2 → 16G7/2, which were induced by an external electric field and dipole-forbidden, have been studied experimentally. The values for the scalar polarizabilities (in units сm–1/(kV/сm)2) α0(16F5/2) = 3.71 ± 0.3, α0(18D3/2) = 11.70 ± 0.25, and α0(16G7/2) = 44.1 ± 0.9, which are compared with the calculated one, have been obtained. The new values of energy parameters for the states 18D3/2 and 16G7/2 have been determined.
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Original Russian Text © P.A. Bokhan, D.E. Zakrevskii, V.A. Kim, N.V. Fateev, 2018, published in Optika i Spektroskopiya, 2018, Vol. 124, No. 1, pp. 5–11.
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Bokhan, P.A., Zakrevskii, D.E., Kim, V.A. et al. The Excitation of Rydberg Atoms of Thallium in an Electric Field. Opt. Spectrosc. 124, 1–7 (2018). https://doi.org/10.1134/S0030400X18010046
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DOI: https://doi.org/10.1134/S0030400X18010046