title: Excitation and ionization of hydrogen Rydberg states in a plasma.
abstract: Hydrogen Rydberg states in a hydrogen plasma are optically excited from the plasma-excited n = 2 state. Photoionization and optogalvanic ionization, which is due to electron-impact ionization and other collisional processes, are used to monitor the Rydberg states. This process may be used to study collisional ionization of the Rydberg states.
authors.forename: W
authors.initials: W
authors.lastname: Glab
authors.forename: M H
authors.initials: MH
authors.lastname: Nayfeh