Title :
Atomic oxygen density measurement of a nanosecond pulsed helium plasma jet in ambient air
Author :
Chunqi Jiang ; Carter, Campbell
Author_Institution :
Dept. of Electr. Eng.-Electrophys., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
Summary form only given. Non-thermal atmospheric-pressure, helium plasma jet was generated in ambient air with a hollow electrode-based device that was powered by 100 ns, 6 kV pulses. The promising biomedical application of this cold plasma jet for biofilm-mediated infectious disease control1 motivates diagnostic studies of the reactive plasma species that may contribute significantly to the bactericidal activity. Temporal development and spatial distribution of atomic oxygen density in the pulsed plasma jet were measured using two-photon absorption laser-induced fluorescence spectroscopy. Radially symmetric, the atomic oxygen density distribution along the axis exhibits a wave-like propagating behavior. The entrainment effect of the ambient air on the production of atomic oxygen is discussed.
Keywords :
fluorescence; helium; oxygen; plasma density; plasma diagnostics; plasma jets; plasma sources; He; O; atomic oxygen density measurement; bactericidal activity; biofilm-mediated infectious disease control; biomedical application; cold plasma jet; hollow electrode-based device; nanosecond pulsed helium plasma jet; nonthermal helium plasma jet; pressure 1 atm; reactive plasma; spatial distribution; temporal development; time 100 ns; two-photon absorption laser-induced fluorescence spectroscopy; voltage 6 kV; Atomic beams; Atomic measurements; Density measurement; Helium; Military aircraft; Oxygen; Plasmas;
Conference_Titel :
Plasma Science (ICOPS), 2013 Abstracts IEEE International Conference on
Conference_Location :
San Francisco, CA
DOI :
10.1109/PLASMA.2013.6635198
