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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2021, Volume 113, Issue 2, Pages 92–95
DOI: https://doi.org/10.31857/S1234567821020038 (Mi jetpl6342) 		 
This article is cited in 4 scientific papers (total in 4 papers)

PLASMA, HYDRO- AND GAS DYNAMICS

Diagnostics of a diluted ultracold plasma using the autoionization effect of Rydberg states of $^{40}$Ca atoms

B. B. Zelenerabc, E. V. Vilshanskayaac, S. A. Saakyana, V. A. Sautenkova, B. V. Zelenera, V. E. Fortova

a Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, 125412 Russia
b National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, 115409 Russia
c National Research University Moscow Power Engineering Institute, Moscow, 111250 Russia
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DOI: https://doi.org/10.31857/S1234567821020038
Abstract: A sensitive method to study a dilute ultracold plasma based on the autoionization resonances of Rydberg atoms is demonstrated. Ultracold $^{40}$Ca Rydberg atoms are prepared in a continuously operating magneto-optical trap. A method that allows the detection of the plasma with ion and electron densities below $10^9$ m$^{-3}$ is shown. Experimental studies of resonances at the two-photon $4s3d\,{}^1D_2{-}90\,^1D_2$ Rydberg transition have been carried out using $672$ and $798$ nm resonant laser beams. The autoionization resonance is observed during fluorescence of single-charged $^{40}$Ca ions at a wavelength of $397$ nm. The dependence of the amplitude of autoionization resonance on the density of ions in the continuously generated ultracold plasma is obtained.
Funding agency Grant number
Russian Science Foundation 18-12-00424
Ministry of Education and Science of the Russian Federation МД-2189.2019.2
The work was supported by the Russian Science Foundation, project no. 18-12-00424. The work on the creation of an optical scheme for the excitation of Rydberg atoms using a laser at a wavelength of 798 nm was also supported by the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools, project no. MD-2189.2019.2.
Received: 26.11.2020
Revised: 07.12.2020
Accepted: 07.12.2020
English version:
Journal of Experimental and Theoretical Physics Letters, 2021, Volume 113, Issue 2, Pages 82–85
DOI: https://doi.org/10.1134/S0021364021020107
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: B. B. Zelener, E. V. Vilshanskaya, S. A. Saakyan, V. A. Sautenkov, B. V. Zelener, V. E. Fortov, “Diagnostics of a diluted ultracold plasma using the autoionization effect of Rydberg states of $^{40}$Ca atoms”, Pis'ma v Zh. Èksper. Teoret. Fiz., 113:2 (2021), 92–95; JETP Letters, 113:2 (2021), 82–85
Citation in format AMSBIB
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