title: Development of a nanosecond discharge-enhanced laser plasma spectroscopy.
abstract: A nanosecond pulse discharge circuit is developed and used to enhance the optical emission of laser plasma. An intense discharge spark was observed with a peak discharge current of 1.9 kA and a peak power of 6.5 MW. The main electric energy deposition only lasted for ∼40 ns. An intense optical emission was observed. The line intensity of plasma emission was greatly increased along with an improved signal-to-noise ratio, in comparison with that using a microsecond pulse discharge circuit. From the measured spectra, electron temperature and electron number density were estimated. The mechanism of the optical emission enhancement was briefly discussed.
authors.affiliation: The Institute of Information Optics, Zhejiang Normal University, Jinhua, 321004, China. wdzhou@zjnu.cn
authors.forename: Weidong
authors.initials: W
authors.lastname: Zhou
authors.forename: Kexue
authors.initials: K
authors.lastname: Li
authors.forename: Xiafen
authors.initials: X
authors.lastname: Li
authors.forename: Huiguo
authors.initials: H
authors.lastname: Qian
authors.forename: Jie
authors.initials: J
authors.lastname: Shao
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Fang
authors.forename: Pinhua
authors.initials: P
authors.lastname: Xie
authors.forename: Wenqing
authors.initials: W
authors.lastname: Liu