Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2010-10-01

Journal: PLASMA SCIENCE & TECHNOLOGY

Included Journals: Scopus、EI、SCIE

Volume: 12

Issue: 5

Page Number: 561-565

ISSN: 1009-0630

Key Words: atmospheric pressure; nonequilibrium Ar/O(2) plasma; preionization; actinometry; concentration of atomic oxygen; heat transfer oil

Abstract: An atmospheric pressure nonequilibrium argon/oxygen plasma jet assisted by the preionization of syringe needle electrode discharge is reported. With the syringe needle plasma as its pre-ionization source, the hybrid barrier-jet was shown to generate uniform discharge with a lower breakdown voltage and a relatively low gas temperature varying from 390 K to 440 K, even when the vol.% oxygen in argon was up to 6%. Utilizing the actinometry method, the concentration of atomic oxygen was estimated to be about in an orders of magnitude of 10(17) cm(-3). The argon/oxygen plasma jet was then employed to clean out heat transfer oil, with a maximum cleaning rate of 0.1 mm/s achieved.