Title :
Higher pole linear traps for atomic clock applications
Author :
Prestage, John D. ; Tjoelker, Robert L. ; Maleki, Lute
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
We investigate experimentally and theoretically higher pole linear ion traps for frequency standard use. We have built a 12-pole trap and have successfully loaded ions into it from a linear quadrupole trap. By solving the Boltzmann equation describing large ion clouds where space charge interactions are important we show that clock frequency changes due to ion number fluctuations are much smaller in ion clocks based multipole traps than comparable clocks based on quadrupole linear traps
Keywords :
Boltzmann equation; atomic clocks; fluctuations; frequency standards; mercury (metal); particle traps; positive ions; quantum optics; space charge; trapped ions; 12-pole trap; Boltzmann equation; Hg; atomic clock applications; clock frequency changes; comparable clocks; frequency standard; higher pole linear traps; ion clocks based multipole traps; ion clouds; ion number fluctuations; linear ion traps; linear quadrupole traps; quadrupole linear traps; space charge interactions; Atom optics; Atomic clocks; Charge carrier processes; Clouds; Doppler shift; Electron traps; Frequency; Optical buffering; Particle beam optics; Space charge;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.840723
