In:
Journal of Physics D: Applied Physics, IOP Publishing, Vol. 47, No. 41 ( 2014-10-15), p. 415202-
Abstract:
In the present study, a single electrode micro-plasma jet working in helium flow was investigated. The aim of our study was to clarify the influence of the tube diameter on the discharge ignition and sustaining voltage, as well as on nitrogen rotational temperature, helium excitation temperature and electron density. The diameter of the micro-tubes was varied in the range of 80–500 µ m. A sinusoidal voltage with a frequency of 6 kHz was applied to ignite and sustain the plasma jet. Both the ignition and sustaining voltage monotonically increased with the decreasing diameter of the tube. The gas temperature of the plasma in the capillary tube estimated by the rotational temperature of the N 2 second positive system remained below 500 K and depended weakly on tube diameter, while the excitation temperature of He and electron density, n e , increased as the tube diameter decreased.
Type of Medium:
Online Resource
ISSN:
0022-3727
,
1361-6463
DOI:
10.1088/0022-3727/47/41/415202
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2014
detail.hit.zdb_id:
209221-9
detail.hit.zdb_id:
1472948-9
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