Fine-structure artifact of the velocity distribution of Cs beam tubes as measured by the pulsed microwave power technique [atomic frequency standard]

Author

Johnson, W.A. ; Karuza, S.K. ; Voit, F.J.

Author_Institution

Aerospace Corp., Los Angeles, CA, USA

fYear

1990

fDate

23-25 May 1990

Firstpage

94

Lastpage

97

Abstract

An artifact of the pulsed microwave power technique used to measure the velocity distributions of Cs beam tubes is shown. To predict these results, a simple theory is used that considers the Ramsey response function (i.e. output tube current vs. microwave frequency) as being a simple electrical-filter transfer function for the input of the pulse-modulated microwave power. Calculations that assume the principle of superposition are used to give predictions that are in close agreement with the measured results. This theory predicts how to set the pulse width so that the fine-structure artifact is minimized

Keywords

atomic beams; atomic fine structure; caesium; frequency measurement; measurement standards; microwave measurement; Cs beam tubes; Ramsey response function; atomic frequency standard; electrical-filter transfer function; fine-structure; microwave frequency; microwave measurement; output tube current; pulse width; pulsed microwave power; superposition; velocity distribution; Frequency; Laboratories; Microwave measurements; Microwave theory and techniques; Optical pulses; Power measurement; Pulse measurements; Pulse modulation; Space vector pulse width modulation; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control, 1990., Proceedings of the 44th Annual Symposium on

Conference_Location

Baltimore, MD

Type

conf

DOI

10.1109/FREQ.1990.177486

Filename

177486