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

Volume

32

Issue

5

fYear

2004

Firstpage

2026

Lastpage

2031

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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2004.835967

Filename

1347258