Features of the Formation of the Spin Polarization of an Alkali Metal at the Resolution of Hyperfine Sublevels in the 2S1/2 State


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Abstract

The optical orientation of the angular momenta of alkali atoms in the presence of a buffer gas (molecular nitrogen) has been studied experimentally. It has been shown that, even at a low concentration of molecular nitrogen in the cell, the excitation of 133Cs atoms from the lower hyperfine level with F = 3, which belongs to the ground 2S1/2 state, results in a larger amplitude of the magnetic resonance than the excitation from the hyperfine level with F = 4. This result has been theoretically explained under the assumption that the spin state of the alkali atomic nucleus does not change at collision with a nitrogen molecule, which is accompanied by a nonradiative transition of the alkali atom from the excited 2P1/2 state to the ground 2S1/2 state.

About the authors

E. N. Popov

Peter the Great St. Petersburg Polytechnic University

Author for correspondence.
Email: enp-tion@yandex.ru
Russian Federation, St. Petersburg, 195251

A. S. Pazgalev

Ioffe Physical–Technical Institute

Email: enp-tion@yandex.ru
Russian Federation, St. Petersburg, 194021

V. A. Kartoshkin

Ioffe Physical–Technical Institute

Email: enp-tion@yandex.ru
Russian Federation, St. Petersburg, 194021

S. P. Dmitriev

Ioffe Physical–Technical Institute

Email: enp-tion@yandex.ru
Russian Federation, St. Petersburg, 194021

A. K. Vershovskii

Ioffe Physical–Technical Institute

Email: enp-tion@yandex.ru
Russian Federation, St. Petersburg, 194021

A. N. Litvinov

Peter the Great St. Petersburg Polytechnic University

Email: enp-tion@yandex.ru
Russian Federation, St. Petersburg, 195251

S. M. Ustinov

Peter the Great St. Petersburg Polytechnic University

Email: enp-tion@yandex.ru
Russian Federation, St. Petersburg, 195251

K. A. Barantsev

Peter the Great St. Petersburg Polytechnic University

Email: enp-tion@yandex.ru
Russian Federation, St. Petersburg, 195251

S. P. Voskoboinikov

Peter the Great St. Petersburg Polytechnic University

Email: enp-tion@yandex.ru
Russian Federation, St. Petersburg, 195251

V. A. Bobrikova

Peter the Great St. Petersburg Polytechnic University

Email: enp-tion@yandex.ru
Russian Federation, St. Petersburg, 195251

M. V. Petrenko

Ioffe Physical–Technical Institute

Email: enp-tion@yandex.ru
Russian Federation, St. Petersburg, 194021

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