Skip to main content
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.

Frequency Biases Associated with Distributed Cavity Phase and Microwave Leakage in the Atomic Fountian Primary Frequency Standards IEN-CSF1 and NIST-F1

Published

Author(s)

Steven R. Jefferts, Jon H. Shirley, Neil Ashby, Thomas P. Heavner, Elizabeth A. Donley, F Levi, Eric A. Burt, G J. Dick

Abstract

The subject of frequency shifts in atomic frequency standards caused either by distributed cavity phase or microwave leakage goes back to the earliest days of the thermal beam standards [1,2], and has been the subject of continuing theoretical and experimental work over the last fifty years. [3-7]. Laser-cooled fountain frequency standards pose different problems with respect to both distributed cavity phase and microwave leakeage than the thermal beam standards. This is due both to the very different microwave structure used in fountains as well as the lower center-of-mass velocity and very narrow velocity distribution which allows operation at significantly elevated microwave power in fountain standards.
Proceedings Title
Proc., European Frequency and Time Forum
Conference Title
European Frequency and Time Forum

Keywords

atomic clock, primary frequency standard

Citation

Jefferts, S. , Shirley, J. , Ashby, N. , Heavner, T. , Donley, E. , Levi, F. , Burt, E. and Dick, G. (2005), Frequency Biases Associated with Distributed Cavity Phase and Microwave Leakage in the Atomic Fountian Primary Frequency Standards IEN-CSF1 and NIST-F1, Proc., European Frequency and Time Forum, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50108 (Accessed May 22, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created March 21, 2005, Updated February 17, 2017