Title :
Velocity distributions from the Fourier transforms of Ramsey line shapes
Author_Institution :
Time & Frequency Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
The Fourier transform method is routinely used to find velocity distributions for the primary frequency standard NIST-7. The second-order Doppler shift is calculated from these distributions. Experimental and numerical tests of the method show that the shift can be determined within a few tenths of a per cent.
Keywords :
Doppler measurement; Fourier transforms; atomic clocks; caesium; frequency measurement; measurement standards; optical pumping; Fourier transforms; NIST-7; Ramsey lineshapes; atomic velocity distributions; numerical tests; primary frequency standard; second-order Doppler shift; Atom optics; Doppler shift; Fourier transforms; Frequency conversion; NIST; Optical pumping; Pulse measurements; Shape; Standards development; Testing;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location :
Braunschweig, Germany
Print_ISBN :
0-7803-3376-4
DOI :
10.1109/CPEM.1996.547069
