Accurate temperature measurement of cold atoms in cesium fountain clocks

We introduce a new approach to determine if a cloud of cold atoms has or not a unique, well-defined temperature. In the first case, the temperature can be determined using the width of the velocity distribution. However, the temperature in a cloud of cold atoms may not be well-defined if the velocit...

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Bibliographic Details
Published inOptics express Vol. 30; no. 14; pp. 24261 - 24275
Main Authors Medina-Herrera, A., Ortiz, C. A., de Carlos-López, E., López-Romero, J. M.
Format Journal Article
LanguageEnglish
Published 04.07.2022
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Summary:We introduce a new approach to determine if a cloud of cold atoms has or not a unique, well-defined temperature. In the first case, the temperature can be determined using the width of the velocity distribution. However, the temperature in a cloud of cold atoms may not be well-defined if the velocity distribution does not turn out to be Gaussian. In this case, the width of the velocity distribution cannot be associated to a unique temperature, and additional considerations exposed here should be followed to measure the temperatures of two groups of atoms forming the whole cloud. Also an uncertainty evaluation is presented.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.461360