Two-dimensional simulation of an atmospheric-pressure RF DBD in a H2 :O2 mixture: discharge structures and plasma chemistryстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 19 июля 2013 г.
Аннотация:The results of two-dimensional modelling of a radio-frequency dielectric barrier discharge (RF
DBD) in a hydrogen–oxygen stoichiometric mixture under atmospheric pressure are
presented. The production of active species and the possibility of ignition of the mixture are
studied. It is shown that the production of active species in the discharge is enough to reduce
the ignition temperature significantly. A detailed description of the ion production and loss is
presented. The processes of electron attachment are very fast, while the detachment processes
depend on the type of ion. The electron detachment, charge recombination, and conversion of
negative and positive ions are very important here. The current discharge consists of
breakdowns that occur in each half-period, and it resembles the standard DBDs of kilohertz
frequency. The surface charge is not uniform over the electrode area and the RF DBD consists
of micro-discharges, which are not so pronounced as in the DBDs of kilohertz frequency. Two
additional types of RF DBDs, the dual-frequency RF DBD and frequency-modulated RF
DBD, are simulated for the purpose of controlling the ratio between the input power absorbed
by electrons and ions in this discharge.