title: [Spectroscopic diagnostics of DC argon plasma at atmospheric pressure].
abstract: The optical emission spectra of DC argon plasma at atmospheric pressure were measured inside and outside the arc chamber. The electron temperature was determined from the Boltzmann plot, and the electron density was derived from Stark broadening of Ar I lines. The criteria for the existence of local thermodynamic equilibrium (LTE)in the plasma was discussed. The results indicate that the DC argon plasma at atmospheric pressure under our experimental conditions is in LTE.
authors.affiliation: Institute for Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Tu
authors.forename: Sheng-yong
authors.initials: SY
authors.lastname: Lu
authors.forename: Jian-hua
authors.initials: JH
authors.lastname: Yan
authors.forename: Zeng-yi
authors.initials: ZY
authors.lastname: Ma
authors.forename: Xin-chao
authors.initials: XC
authors.lastname: Pan
authors.forename: Ke-fa
authors.initials: KF
authors.lastname: Cen
authors.forename: Bruno
authors.initials: B
authors.lastname: Cheron