ATOMIC TRANSIT AND DELAYED IONIZATION EFFECTS ON CESIUM BEAM FREQUENCY STANDARDS

Bernardo Jaduszliwer

Abstract:	In a compact cesium beam atomic clock the magnets that per form state selection and analysis transmit a narrow velocity distribution. Increasing the width of the transmitted velocity distribution will increase the beam Intensity, but it will also distort the atomic beam amplitude modulation which gives the clock error signal. Detection is accomplished by surface ionization on a hot wire, which acts as a low-pass filter. The combined effects of these processes on the clock's error signal are analyzed in detail for a test case involving an atomic beam which has been square-wave amplitude-modulated by its interaction with the frequency-modulated microwave field. Our analysis, performed for the type of cesium beam tube used on GPS satellites, shows the importance of processes taking place after the atom-microwave interaction is completed for the optimization of the clock's performance.
Published in:	Proceedings of the 19th Annual Precise Time and Time Interval Systems and Applications Meeting December 1 - 3, 1989 Sheraton Hotel Redondo Beach, California
Pages:	235 - 243
Cite this article:	Jaduszliwer, Bernardo, "ATOMIC TRANSIT AND DELAYED IONIZATION EFFECTS ON CESIUM BEAM FREQUENCY STANDARDS," Proceedings of the 19th Annual Precise Time and Time Interval Systems and Applications Meeting, Redondo Beach, California, December 1987, pp. 235-243.
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