Accession Number:

ADA509345

Title:

The Status of Cesium Beam Frequency Standards

Descriptive Note:

Conference paper

Corporate Author:

HEWLETT-PACKARD LABS PALO ALTO CA

Personal Author(s):

Report Date:

1990-12-01

Pagination or Media Count:

10.0

Abstract:

There has been a lot of progress in cesium beam frequency standards in the last few years some of which will be reported here. Optical pumping is being pursued actively in a number of laboratories. Optically slowed and cooled beams have been demonstrated as well as traps for cold neutral atoms. The microwave cavity performance with regard to local phase shift at the beam holes has been improved by use of carefully designed and built ring structures for the cavity ends. Work is being done on improvements in electronics with some emphasis on use of digital circuitry and microprocessors. The frequency pulling due to microwave deltaM - 1 transitions Ramsey pulling has been analyzed and shown to be important. Status of cesium beam frequency standards in some of the laboratories as well as some of the commercial work will be discussed. Since much of the laboratory work going on involves optical pumping and detection, those items will get the most attention here.

Subject Categories:

  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE