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Title: Cancellation of the Collisional Frequency Shift in Caesium Fountain Clocks

Abstract

We have observed that the collisional frequency shift in primary caesium fountain clocks varies with the clock state population composition and, in particular, is zero for a given fraction of the |F=4,m{sub F}=0> atoms, depending on the initial cloud parameters. We present a theoretical model explaining our observations. The possibility of the collisional shift cancellation implies an improvement in the performance of caesium fountain standards and a simplification in their operation.

Authors:
;  [1]; ;  [2]; ;  [3]
  1. National Physical Laboratory, Hampton Road, Teddington, TW11 0LW (United Kingdom)
  2. Joint Quantum Institute and Atomic Physic Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899-8423 (United States)
  3. Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig (Germany)
Publication Date:
OSTI Identifier:
20951234
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 15; Other Information: DOI: 10.1103/PhysRevLett.98.153002; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATOMIC CLOCKS; CANCELLATION; CESIUM; OPERATION; PERFORMANCE

Citation Formats

Szymaniec, K., Chalupczak, W., Tiesinga, E., Williams, C. J., Weyers, S., and Wynands, R. Cancellation of the Collisional Frequency Shift in Caesium Fountain Clocks. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.153002.
Szymaniec, K., Chalupczak, W., Tiesinga, E., Williams, C. J., Weyers, S., & Wynands, R. Cancellation of the Collisional Frequency Shift in Caesium Fountain Clocks. United States. doi:10.1103/PHYSREVLETT.98.153002.
Szymaniec, K., Chalupczak, W., Tiesinga, E., Williams, C. J., Weyers, S., and Wynands, R. Fri . "Cancellation of the Collisional Frequency Shift in Caesium Fountain Clocks". United States. doi:10.1103/PHYSREVLETT.98.153002.
@article{osti_20951234,
title = {Cancellation of the Collisional Frequency Shift in Caesium Fountain Clocks},
author = {Szymaniec, K. and Chalupczak, W. and Tiesinga, E. and Williams, C. J. and Weyers, S. and Wynands, R.},
abstractNote = {We have observed that the collisional frequency shift in primary caesium fountain clocks varies with the clock state population composition and, in particular, is zero for a given fraction of the |F=4,m{sub F}=0> atoms, depending on the initial cloud parameters. We present a theoretical model explaining our observations. The possibility of the collisional shift cancellation implies an improvement in the performance of caesium fountain standards and a simplification in their operation.},
doi = {10.1103/PHYSREVLETT.98.153002},
journal = {Physical Review Letters},
number = 15,
volume = 98,
place = {United States},
year = {Fri Apr 13 00:00:00 EDT 2007},
month = {Fri Apr 13 00:00:00 EDT 2007}
}