Title :
Evaluation of the second-order Doppler shift in the Mg frequency standard
Author :
Bava, Elio ; Novero, Carlo ; Godone, Aldo
Author_Institution :
Dipartimento di Elettronica e Inf., Politecnico di Milano, Italy
fDate :
6/1/1994 12:00:00 AM
Abstract :
We report in this paper the first evaluation of the second-order Doppler shift in the Mg frequency standard. Three methods are considered: direct theoretical computation, Fourier analysis of the experimental Ramsey curve, and Fourier analysis of the discrimination curve. The results obtained are compared in a practical experimental case and turn out in satisfactory agreement, allowing a good confidence on the determination of the shift at the accuracy level of ±3×10-13. The considerations reported in this paper may be of general interest for frequency standards based on atomic or molecular beams with transverse dimensions much larger than the transition wavelength
Keywords :
Doppler effect; Fourier analysis; atomic beams; frequency measurement; magnesium; measurement standards; microwave measurement; spectral line shift; Fourier analysis; Mg; Mg frequency standard; atomic beams; direct theoretical computation; discrimination curve; experimental Ramsey curve; molecular beams; second-order Doppler shift; submillimeter standard; transverse dimensions; Atomic beams; Atomic measurements; Doppler effect; Doppler shift; Metastasis; Microwave devices; Optical modulation; Optical resonators; RF signals; Radio frequency;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
