DocumentCode
2562834
Title
A 303-MHz frequency standard based on trapped Be/sup +/ ions
Author
Bollinger, J.J. ; Heinzen, D.J. ; Itano, W.M. ; Gilbert, S.L. ; Wineland, D.J.
Author_Institution
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fYear
1990
fDate
11-14 June 1990
Firstpage
264
Lastpage
265
Abstract
A 303-MHz hyperfine transition in the ground state of Be/sup +/ ions stored in a Penning trap was used as the basis for a frequency standard. Linewidths as narrow as 900 mu Hz were obtained. The inaccuracy in the second-order Doppler shift was reduced to 5 parts in 10/sup 15/ by laser cooling.<>
Keywords
Doppler effect; atomic hyperfine structure; beryllium; frequency measurement; measurement standards; particle traps; radiation pressure (atoms); 303 MHz; 900 muHz; Penning trap; frequency standard; ground state; hyperfine transition; laser cooling; second-order Doppler shift; trapped Be/sup +/; Clocks; Cooling; Doppler shift; Energy states; Frequency measurement; Laser transitions; Magnetic fields; Narrowband; Optical pumping; Stationary state;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on
Conference_Location
Ottawa, Ontario, Canada
Type
conf
DOI
10.1109/CPEM.1990.110016
Filename
110016
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