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A comparison of pulsed and continuous ultraviolet light sources for the decontamination of surfaces

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7 Author(s)
McDonald, K.F. ; Dept. of Electr. Eng., Missouri Univ., Columbia, MO, USA ; Curry, R.D. ; Clevenger, T.E. ; Unklesbay, K.
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The experimental results on the development of a decontamination process that uses ultraviolet light and chemical photosensitizer for disinfecting surfaces and solutions are reported. Reduction in the microbial viability as a function of applied UV fluence is presented for the inactivation of Bacillus subtilis spores. Results obtained with aqueous solutions and with surfaces indicate that pulsed UV light is more effective than continuous UV light. Nearly three orders of magnitude of enhanced inactivation have been achieved with the photosensitized UV process on surfaces

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Plasma Science, IEEE Transactions on  (Volume:28 ,  Issue: 5 )