Title :
Megawatt, pulsed ultraviolet photon sources for microbial inactivation
Author :
Hancock, Patrick ; Curry, Randy D. ; McDonald, Kenneth F. ; Altgilbers, Larry
Author_Institution :
Dept. of Electr. Eng., Univ. of Missouri, Columbia, MO, USA
Abstract :
The University of Missouri-Columbia (UMC) has developed pulsed ultraviolet (UV) photon sources commensurate with enhanced ultraviolet inactivation of hazardous microbials on surfaces or in a water matrix. Pulsed xenon flashlamps have been optimized to produce a high ultraviolet photon yield in the 180-320 nm range that is lethal to microbials and has a high cross-sectional interaction with photosensitizer chemicals to synergistically enhance microbial inactivation. Electrical models have been derived to predict the time-dependent plasma discharge impedance profiles of the flashlamp UV source.
Keywords :
biological effects of ultraviolet radiation; biological techniques; cellular effects of radiation; flash lamps; microorganisms; pulsed power supplies; ultraviolet sources; 180 to 320 nm; University of Missouri-Columbia; enhanced ultraviolet inactivation; flashlamp UV source; megawatt ultraviolet photon sources; microbial inactivation; photosensitizer chemicals; pulsed ultraviolet photon sources; pulsed xenon flashlamps; time-dependent plasma discharge impedance; ultraviolet photon yield; Chemical processes; Circuit simulation; Lamps; Optical surface waves; Plasma applications; Plasma density; Plasma properties; Plasma sources; Plasma temperature; Xenon; Bacteria; disinfection; flashlamps; high voltage; surface disinfection; ultraviolet;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2004.835967
