Mt. Frey et al., USE OF THE STARK-EFFECT TO MINIMIZE RESIDUAL ELECTRIC-FIELDS IN AN EXPERIMENTAL VOLUME, Review of scientific instruments, 64(12), 1993, pp. 3649-3650
A technique based on the Stark effect is described that allows the res
idual electric field in a small experimental volume to be systematical
ly reduced to less than or similar to 50 muV cm-1. Although developed
initially to allow production of Rydberg atoms in states with very lar
ge values of principal quantum number n, it will also permit high reso
lution studies involving near threshold photoionization or very low-en
ergy free electrons.