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Proceedings Paper

New bactericidal UV light sources: excilamps
Author(s): Edward A. Sosnin; Larisa V. Lavrent'eva; Mikhail V. Erofeev; Yana V. Masterova; Eugenia N. Kuznetzova; Victor F. Tarasenko
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Paper Abstract

A reliable bactericidal effect on Escherichia coli cells irradiation by excilamps has been established. Both on primary and secondary irradiation there exists the reciprocally proportional dependence between irradiation doze (or exposure time) and survived cells number. The microorganisms survived after primary irradiation are shown to have not changed sensitivity to excilamps irradiation. The best results have been obtained during XeBr-excilamp irradiation. Owing to their technical parameters, the excilamps are promising systems for UV-sterilization. Comparison of capacitive discharge excilamp characteristics with other conventional UV light sources in presented. A comparative study on UV doze effect of a barrier discharge KrCl-excilamp (λ = 222 nm) on Staphylococcus aureus and Escherichia coli inactivation was carried out. KrCl-excilamp emission power is 65 W, and emitting area is 0.1 m2. It has been demonstrated that Staphylococcus aureus cell sensitivity to UV radiation at this wavelength is higher than that of Escherichia coli.

Paper Details

Date Published: 3 May 2004
PDF: 6 pages
Proc. SPIE 5483, Atomic and Molecular Pulsed Lasers V, (3 May 2004); doi: 10.1117/12.563017
Show Author Affiliations
Edward A. Sosnin, High Current Electronics Institute (Russia)
Larisa V. Lavrent'eva, Tomsk State Univ. (Russia)
Mikhail V. Erofeev, High Current Electronics Institute (Russia)
Yana V. Masterova, Tomsk State Univ. (Russia)
Eugenia N. Kuznetzova, Tomsk State Univ. (Russia)
Victor F. Tarasenko, High Current Electronics Institute (Russia)

Published in SPIE Proceedings Vol. 5483:
Atomic and Molecular Pulsed Lasers V
Victor F. Tarasenko, Editor(s)

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