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Short-Pulsed Cold and "Very Cold" Discharges in High-Pressure Gases and Liquids

ORAL · Invited

Abstract

The presentation is focused on plasma physics and plasma chemistry of the non-thermal strongly non-equilibrium pulsed (or transient) discharges at atmosperic pressure, elevated pressures, and even in liquids, including the cryogenic liquids.

- The first to be discussed is the transitional (warm) gliding arc discharge. Analyzing physics of these transient discharges, the special attention will be paid to physics of the "fast equilibrium-to-nonequilibrium transition" (FENETRE phenomenon) and plasma stabilization in the reverse vortex "tornado" flow. Application-wise, newest achievents in scaling up of this source of "cold transitional" plasma to the level of 40kW are going to be presented with some examples of large scale applications for chemical treatment of different liquids and gases.

- The second example of the cold pulsed discharges to be discussed is pulsed dielectric barrier discharge (DBD) with special focus of physics of this plasma source, the DBD uniformity at atmospheric and elevated presssures in air, other gases, and aerosols. Application-wise, especial attention is going to be focused on recent achievents in plasma medicine and plasma treatment of seeds, plants, and foods.

- The second example is rellated to generation of cold plasma inside of different liquids, including the cryogenic liquids. Analyzing physics of these transient plasmas, the special attention is going to be paid to breakdown mechanism if the liquids without bubbles and voids. Application-wise, the special attention is going to be focused on generation of polymeric nitrogen and other nitrogen compounds in the cryogenic plasma of liquid nitrogen.

General conclusion is going to be focused on what kind of new "out-of-the-box" applications in chemistry, biology, and medicine we can expect from novel fundamental achievents in plasma physics.

Presenters

  • Alexander Fridman

    Drexel University, Nyheim Plasma Institute

Authors

  • Alexander Fridman

    Drexel University, Nyheim Plasma Institute