Title :
Megawatt, pulsed ultraviolet photon sources for microbial inactivation
Author :
Hancock, Patrick ; CUrry, Randy ; McDonald, Kenneth ; Altgilbers, Larry
Author_Institution :
Dept. of Electr. Eng., Missouri Univ., Columbia, MO, USA
Abstract :
The University of Missouri-Columbia (UM-C) 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-section 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. These models are discussed in the following paper.
Keywords :
biological techniques; discharges (electric); flash lamps; microorganisms; optimisation; photochemistry; pulse generators; pulsed power technology; ultraviolet sources; xenon; cross-section interaction; flashlamp UV source; hazardous microbials; microbial inactivation; photosensitizer chemicals; plasma discharge impedance profiles; pulsed ultraviolet photon sources; pulsed xenon flashlamps; water matrix; Circuit simulation; Conductivity; Optical surface waves; Plasma applications; Plasma density; Plasma properties; Plasma simulation; Plasma temperature; Trigger circuits; Xenon;
Conference_Titel :
Pulsed Power Conference, 2003. Digest of Technical Papers. PPC-2003. 14th IEEE International
Conference_Location :
Dallas, TX, USA
Print_ISBN :
0-7803-7915-2
DOI :
10.1109/PPC.2003.1278010
