New bactericidal UV light sources: excilamps

Edward A. Sosnin; Larisa V. Lavrent'eva; Mikhail V. Erofeev; Yana V. Masterova; Eugenia N. Kuznetzova; Victor F. Tarasenko

doi:10.1117/12.563017

3 May 2004 New bactericidal UV light sources: excilamps

Edward A. Sosnin, Larisa V. Lavrent'eva, Mikhail V. Erofeev, Yana V. Masterova, Eugenia N. Kuznetzova, Victor F. Tarasenko

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Proceedings Volume 5483, Atomic and Molecular Pulsed Lasers V; (2004) https://doi.org/10.1117/12.563017
Event: Atomic and Molecular Pulsed Lasers V, 2003, Tomsk, Russian Federation

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.

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Edward A. Sosnin, Larisa V. Lavrent'eva, Mikhail V. Erofeev, Yana V. Masterova, Eugenia N. Kuznetzova, and Victor F. Tarasenko "New bactericidal UV light sources: excilamps", Proc. SPIE 5483, Atomic and Molecular Pulsed Lasers V, (3 May 2004); https://doi.org/10.1117/12.563017

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