ELECTRON RETARDING POTENTIAL STUDIES OF PHOTOIONIZATION

摘要

The use of the electron retarding potential technique in studies of ionization thresholds and relative transition proba¬bilities to various electronic and vibrational states of ions is discussed. The gases argon, nitric oxide and hydrogen are used to illustrate the technique. The assignment of one electronic state in NO is shown to be questionable and the role that auto-ionization may play in vibrational excitation is exhibited.