Abstract

Ion storage in both Paul and Penning traps has been the basis for many high precision experiments during the past years.¹ The preparation of atomic samples for spectroscopic experiments which are free of perturbations by collisions with walls or buffer gas and by spurious external fields makes the trapping technique a unique tool for a frequency standard. Moreover, optical cooling² eliminates systematic shifts and the need for corrections which account for the ion motion.

© 1990 Optical Society of America