By using stepwise excitation in an atomic beam, we have excited slow-moving atoms to pure high-lying quantum states at densities low enough to avoid loss by collision. The atoms were detected with high efficiency by Stark ionization. Results are presented of a study of the threshold field for ionization for s states of sodium with principal quantum number n from 26 to 37.
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy