Release Time:2019-03-09  Hits:

Indexed by:Journal Papers

Date of Publication:2015-06-01

Journal:CHINESE PHYSICS B

Included Journals:Scopus、ISTIC、EI、SCIE

Volume:24

Issue:6

ISSN:1674-1056

Key Words:atmospheric pressure; plasma jet; dual-power electrodes; fluid model

Summary:In this paper, the characteristics of an atmospheric pressure helium plasma jet generated by a dual-power electrode (DPE) configuration are investigated by using a two-dimensional fluid model. The effect of a needle electrode on the discharge is studied by comparing the results of the DPE configuration with those of the single ring electrode configuration. It is found that the existence of the needle leads to the generation of a helium plasma jet with a higher propagation velocity, higher species density, and larger discharge width. Furthermore, the influences of the needle radius and needle-to-ring discharge gap on the generation of a plasma jet are also studied. The simulation results indicate that the needle electrode has an evident influence on the plasma jet characteristics.