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Title: Spin-exchange frequency shift in alkali-metal-vapor cell frequency standards

Abstract

In this paper we calculate the effect of spin-exchange collisions in alkali-metal vapors. In the framework of the high-energy approximation, we evaluate the spin-exchange cross sections related to the line broadening and to the frequency shift of the ground state hyperfine transition. We do the calculation for the four isotopes, {sup 23}Na, {sup 39}K, {sup 87}Rb, and {sup 133}Cs. The results are used in particular to evaluate the spin-exchange frequency shift in Rb vapor cell frequency standards used in many applications. It turns out that, due to possible fluctuations in the atomic density, spin exchange may affect significantly the medium and long term frequency stability of the frequency standard.

Authors:
; ;  [1];  [2]
  1. Istituto Elettrotecnico Nazionale Galileo Ferraris, Strada delle Cacce 91, 10135 Turin (Italy)
  2. Universite de Montreal, Montreal (Canada)
Publication Date:
OSTI Identifier:
20786951
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.73.033414; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ALKALI METALS; APPROXIMATIONS; ATOM COLLISIONS; CESIUM 133; CROSS SECTIONS; DENSITY; FLUCTUATIONS; GROUND STATES; LINE BROADENING; POTASSIUM 39; RUBIDIUM 87; SODIUM 23; SPIN EXCHANGE; STABILITY; VAPORS

Citation Formats

Micalizio, Salvatore, Godone, Aldo, Levi, Filippo, and Vanier, Jacques. Spin-exchange frequency shift in alkali-metal-vapor cell frequency standards. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.0.
Micalizio, Salvatore, Godone, Aldo, Levi, Filippo, & Vanier, Jacques. Spin-exchange frequency shift in alkali-metal-vapor cell frequency standards. United States. doi:10.1103/PHYSREVA.73.0.
Micalizio, Salvatore, Godone, Aldo, Levi, Filippo, and Vanier, Jacques. Wed . "Spin-exchange frequency shift in alkali-metal-vapor cell frequency standards". United States. doi:10.1103/PHYSREVA.73.0.
@article{osti_20786951,
title = {Spin-exchange frequency shift in alkali-metal-vapor cell frequency standards},
author = {Micalizio, Salvatore and Godone, Aldo and Levi, Filippo and Vanier, Jacques},
abstractNote = {In this paper we calculate the effect of spin-exchange collisions in alkali-metal vapors. In the framework of the high-energy approximation, we evaluate the spin-exchange cross sections related to the line broadening and to the frequency shift of the ground state hyperfine transition. We do the calculation for the four isotopes, {sup 23}Na, {sup 39}K, {sup 87}Rb, and {sup 133}Cs. The results are used in particular to evaluate the spin-exchange frequency shift in Rb vapor cell frequency standards used in many applications. It turns out that, due to possible fluctuations in the atomic density, spin exchange may affect significantly the medium and long term frequency stability of the frequency standard.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
issn = {1050-2947},
number = 3,
volume = 73,
place = {United States},
year = {2006},
month = {3}
}