Email this article On Precision Measurement of the Frequency of the 11S–23S Forbidden Transition of a Helium Atom
- Authors: Baklanov E.V.1,2, Tai’chenachev A.V.1,2
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Affiliations:
- Institute of Laser Physics of the Siberian Branch of Russian Academy of Sciences
- Novosibirsk State University
- Issue: Vol 124, No 3 (2018)
- Pages: 285-288
- Section: Spectroscopy of Atoms and Molecules
- URL: https://journal-vniispk.ru/0030-400X/article/view/165644
- DOI: https://doi.org/10.1134/S0030400X18030050
- ID: 165644
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Abstract
The possibility is demonstrated of a precision frequency measurement for the 11S0−23S1 forbidden transition (at 62.6 nm) of a helium atom using the stimulated Raman scattering method. The 11S0 singlet state is the ground state of 4He, while the metastable 23S1 state has the lowest energy in the triplet part of the spectrum (4He*). The transition has a very small natural width, which allows us to consider it as a possible reference for creation of a frequency standard in the vacuum ultraviolet region.
About the authors
E. V. Baklanov
Institute of Laser Physics of the Siberian Branch of Russian Academy of Sciences; Novosibirsk State University
Author for correspondence.
Email: baklanov.ev@gmail.com
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090
A. V. Tai’chenachev
Institute of Laser Physics of the Siberian Branch of Russian Academy of Sciences; Novosibirsk State University
Email: baklanov.ev@gmail.com
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090
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