Title :
Progress on a cryogenic linear trap for /sup 199/Hg/sup +/ ions
Author :
Poitzsch, M.E. ; Bergquist, J.C. ; Itano, W.M. ; Wineland, D.J.
Author_Institution :
Time & Frequency Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
We have observed linear "crystals" of up to tens of laser-cooled /sup 199/Hg/sup +/ ions in a new cryogenic linear rf ion trap that operates at liquid helium temperature and is designed for use as a prototype 40.5 GHz frequency standard with high accuracy and stability.<>
Keywords :
atomic clocks; atomic structure; frequency measurement; frequency stability; hyperfine structure; measurement standards; mercury (metal); radiation pressure; trapped ions; /sup 199/Hg/sup +/ ions; 40.5 GHz; Hg; accuracy; cryogenic linear trap; laser-cooled /sup 199/Hg/sup +/ ions; linear rf ion trap; liquid helium temperature; prototype 40.5 GHz frequency standard; stability; Cryogenics; Doppler shift; Frequency; Helium; Magnetic shielding; Mercury (metals); Optical resonators; Signal to noise ratio; Superconducting microwave devices; Temperature;
Conference_Titel :
Frequency Control Symposium, 1994. 48th., Proceedings of the 1994 IEEE International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-1945-1
DOI :
10.1109/FREQ.1994.398253
