期刊
APPLIED PHYSICS LETTERS
卷 99, 期 16, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.3653474
关键词
discharges (electric); helium; plasma diagnostics; plasma jets; Stark effect
资金
- Ministry of Education and Science of the Republic of Serbia [171034, 33022]
Atmospheric-pressure helium plasma jet operating in the bullet/streamer mode has been studied using optical emission spectroscopy. Electric field strength distribution is measured using Stark polarization spectroscopy of He I 492.19 nm line. It is shown that the electric field is almost constant along the jet axis. Measured electric field distribution is in agreement with theoretical predictions of streamer propagation in helium jets at atmospheric pressure. Obtained radial distribution of the axial electric field shows that the ring-shaped structure of the light emission is a consequence of such electric field distribution. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3653474]
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