title: [Study on concentration modulation spectra of the molecular ion beam by AC glow discharge].
abstract: An experimental apparatus using an AC discharge was developed for producing molecular ion beam. The emission spectral intensity of N2+ is stronger than that of N2, and a very high ratio of N2+ (B)/N2 (C) up to 6:1, was achieved in N2 discharge. The effects and processes of N2 discharge, and the concentration modulation spectra were studied. The vibrational temperature and rotational temperature of N2+ molecular ions beam were calculated to be 3 310 and 282 K respectively from the emission spectra.
authors.affiliation: Key Laboratory of Optical and Magnetic Resonance Spectroscopy, Ministry of Education, and Department of Physics, East China Normal University, Shanghai.
authors.forename: Dian-Ping
authors.initials: DP
authors.lastname: Sun
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhu
authors.forename: Xiao-Hua
authors.initials: XH
authors.lastname: Yang
authors.forename: Xu-Ping
authors.initials: XP
authors.lastname: Ying
authors.forename: Yu-Yan
authors.initials: YY
authors.lastname: Liu
authors.forename: Yang-Qin
authors.initials: YQ
authors.lastname: Chen