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Spectroscopy of atoms and molecules
The excitation of Rydberg atoms of thallium in an electric field
P. A. Bokhana, Dm. È. Zakrevskiia, V. A. Kima, N. V. Fateevab a Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
b Novosibirsk State University, Novosibirsk, 630090, Russia
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 $6^{2}P_{1/2}\to6^{2}D_{3/2}\to\mathrm{Tl}^{**}$ in the presence of an electric field with a strength of up to $1.5$ kV/cm near the level $16 F_{5/2}$. The optical transitions $6D_{3/2}\to18D_{3/2}$ и $6D_{3/2}\to16G_{7/2}$, 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)$^2$) $\alpha_{0}(16F_{5/2})=3.71\pm0.3$, $\alpha_{0}(18D_{3/2})=11.70\pm0.25$, and $\alpha_{0}(16G_{7/2})=44.1\pm0.9$, which are compared with the calculated one, have been obtained. The new values of energy parameters for the states $18D_{3/2}$ and $16G_{7/2}$ have been determined.
Received: 05.05.2017
Citation:
P. A. Bokhan, Dm. È. Zakrevskii, V. A. Kim, N. V. Fateev, “The excitation of Rydberg atoms of thallium in an electric field”, Optics and Spectroscopy, 124:1 (2018), 5–11; Optics and Spectroscopy, 124:1 (2018), 1–7
Linking options:
https://www.mathnet.ru/eng/os1083 https://www.mathnet.ru/eng/os/v124/i1/p5
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