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Xenon Iodide Exciplex Lamp as an Efficient Source for the UV Surface Cleaning and Water Decontamination

  • Mykola Guivan
  • H. Motomura
  • M. Jinno
Conference paper
Part of the NATO Science for Peace and Security Series A: Chemistry and Biology book series (NAPSA)

Abstract

Discharges in mixtures containing xenon and iodine are interesting because the exciplex XeI* emits in germicidal spectral region (λmax = 253 nm). In this paper the optimization of a dielectric barrier discharge (DBD) excited lamp operated with a Xe/I2 mixture is reported. Approximately 76% of the excilamp output was due to the BX transition of XeI* exciplex at 253 nm. Short voltage rising and falling time under pulse excitation is more important for the efficiency enhancement than the pulse duration. The average radiation power of 10.3 mW/cm2 was measured under pulsed excitation at a frequency of 80 kHz. An efficiency improvement from about 3% for AC to 5–9% for square pulse excitation was obtained. A good cleaning effect of glass surface and sterilization action was achieved with the DBD-driven XeI* exciplex lamp. The contribution of an atomic iodine emission in the range of 178–207 nm has been confirmed. Germ reduction experiments with the XeI* excilamp have been carried out in a water flow reactor.

Keywords

Dielectric Barrier Discharge Pulse Excitation Subtilis Spore Unipolar Pulse Average Radiation Power 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Department of Quantum ElectronicsUzhgorod National UniversityUzhgorodUkraine
  2. 2.Department of Electrical and Electronic EngineeringEhime UniversityMatsuyamaJapan

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