[Study on plasma temperature in dielectric barrier discharge at the middle value of pd].
The optical emission spectra of Ar/air dielectric barrier discharge (DBD) scanned from 300-800 nm near atmospheric pressure were obtained. Electron excitation temperature (T(exc)) and molecule vibrational temperature (T(v)) in Ar/air DBD at the middle value of pressure-distance (pd) product (about 6.4 x 10(3) Pa x cm) were studied. The ArI 763.51 nm(2P6 --> 1S5) and 772.42 nm(2P2 --> 1S3) lines were chosen to estimate T(exc). T(v) was measured by the N2 second positive band (C 3IIu --> B 3IIg). It was found that T(exc) and T(v) increase with increasing applied voltage. And the varying rate of T(exc) with increasing voltage is bigger than that of T(v).
Dong
Li-Fang
LF
College of Physics Science and Technology, Hebei University, Baoding 071002, China. donglf@mail.hbu.edu.cn
Qi
Yu-Yan
YY
Gao
Rui-Ling
RL
Liu
Feng
F
Li
Xue-Chen
XC