Skip to main content

NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Update on a Comparison of Cesium Fountain Primary Frequency Standards

Published

Author(s)

Thomas E. Parker

Abstract

An update to a previous long term frequency comparison of cesium fountain primary frequency standards has been made. This update covers the approximate three year interval from March 2008 to March 2011 and also includes two new standards. Also, simulated data has been used to estimate the biases and standard deviation of the Birge ratio as a function of the degrees of freedom.
Proceedings Title
Proceedings of the 2011 Joint IEEE International Frequency Control Symposium and European Frequency and Time Forum
Conference Dates
May 1-5, 2011
Conference Location
San Francisco, CA
Conference Title
2011 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum

Keywords

atomic frequency standards, cesium fountan

Citation

Parker, T. (2011), Update on a Comparison of Cesium Fountain Primary Frequency Standards, Proceedings of the 2011 Joint IEEE International Frequency Control Symposium and European Frequency and Time Forum, San Francisco, CA (Accessed October 11, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created July 31, 2011, Updated February 19, 2017
Was this page helpful?