European Joint Committee on Plasma and Ion Surface Engineering.
WALSH, J.L. ... et al, 2012. Ultra-short, repetitively pulsed atmospheric-pressure microplasmas. Presented at: 13th International Conference on Plasma Surface Engineering, 10th-14th September 2012, Garmisch-Partenkirchen, Germany.
Low‐temperature atmospheric‐pressure plasmas are of great importance in many emerging
biomedical and materials processing applications; in recent years there has been a growing interest
in short‐pulsed excitation of such plasmas as a gateway to access highly non‐equilibrium discharge
chemistry. This contribution employs time‐resolved electrical and optical diagnostics in combination
with a time‐hybrid computational model to uncover the physics behind repetitive short pulsed
excitation of atmospheric pressure plasma. It is shown that during the applied voltage pulse the
peak dissipated power can exceed 1GW/cm3 resulting in electron densities approaching 1017 cm‐3 (~6
orders of magnitude larger than conventional low‐temperature atmospheric discharges) while the
gas temperature remains close to room temperature.
This paper was presented at PSE 2012 - the 13th International Conference on Plasma Surface Engineering.