Related Experiment Video
Updated: Jul 9, 2026

Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron
Published on: June 9, 2016
[Study on the emission spectra of N2 plasma jet by AC glow discharge]
Yi Zhu1, Dian-Ping Sun, Xiao-Hua Yang
1Key Laboratory of Optical and Magnetic Resonance Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China.
Abstract:
N2 plasma jet was generated from a nozzle using an AC discharge at about 15 kV. The emission spectra were obtained by using the concentration modulation spectroscopic technique. The dependence of spectral signal on the discharge current was discussed. It was found that the vibrational temperature decreased first and then increased downstream from the nozzle by measuring the emission spectra from different axial positions in the jet. A phenomenological model was presented to explain the vibrational temperature variation with different axial position z. The N2+/N2 ratio varied along the axis and the property of discharge in the experimental system was studied.
Related Concept Videos
Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
Atomic Emission Spectroscopy: Lab
Atomic Emission Spectroscopy: Overview
Atomic Emission Spectroscopy: Instrumentation
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
Atomic Emission Spectroscopy: Interference

