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November 13-14, 2017 Paris, France
5
th
International Conference on
PLASMA CHEMISTRY AND
PLASMA PROCESSING
Journal of Biotechnology and Phytochemistry
Volume 1, Issue 2
Plasma Chemistry 2017
Plasma chemical processes in cold
atmospheric-pressure plasma jets for
biomedicine
George Naidis
Joint Institute for High Temperatures, Russian Academy of Sciences, Russia
C
old atmospheric-pressure plasmas have recently attracted
a great interest owing to their high efficiency inproduction
of reactive species for biomedical applications. Among most
widely used sources of such plasmas are atmospheric-pressure
plasma jets (APPJs) formed by pulsed corona or barrier
discharges inside thin dielectric tubes in flows of various
plasma forming gases typically noble gases, pure or with
molecular admixtures, emerged from the discharge tubes into
ambient air. At pulse repetition frequencies in the kilohertz
range the APPJs are typically composed of bullet-like plasma
plumes - streamers travelling along the jets. Reactive species
excited atoms and molecules, radicals, charged species in
these APPJs are produced by streamers not only in discharge
regions inside the tubes but along the whole jets. Due to this
property, the APPJs operating in the plasma bullet mode are
capable to deliver fluxes of various reactive species, including
those with short lifetimes e.g., oxygen atoms, directly to
treated objects. Composition of produced reactive species is
rather complex, including several tens of various sorts, so that
it is a very difficult task to obtain it in experiment typically,
densities of only several sorts of species are measured.
In this respect, for evaluation of the whole set of reactive
species densities the use of computational methods is of high
importance. In the talk, results of computational studies on
the production of reactive species by APPJs operating in the
plasma bullet mode are summarized.
gnaidis@mail.ruJ Biot Phyt 2017