title: Impact excitation of neon atoms by heated seed electrons in filamentary plasma gratings.
abstract: We demonstrate impact ionization and dissociative recombination of neon (Ne) atoms by means of seeded-electron heating and subsequent electron-atom collisions in an ultraviolet plasma grating, allowing for a substantial fraction of the neutral Ne atomic population to reside in high-lying excited states. A buffer gas with relatively low ionization potential (nitrogen or argon) was used to provide high-density seed electrons. A three-step excitation model is verified by the fluorescence emission from the impact excitation of Ne atoms.
authors: State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
authors: Liping
authors: L
authors: Shi
authors: Wenxue
authors: W
authors: Li
authors: Hui
authors: H
authors: Zhou
authors: Liang'en
authors: L
authors: Ding
authors: Heping
authors: H
authors: Zeng