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Ultraviolet discharges from a radio-frequency system for potential biological/chemical applications |
| Joseph Ametepe1, Sheng Peng2, Dennis Manos3 |
1 Georgia Gwinnett College, School of Science and Technology, Lawrenceville-GA 30078, USA;
2 EXFO, Mississauga, on Canada L5N 6H7;
3 College of William and Mary, Department of Physics, Williamsburg, VA 2385, USA |
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Abstract In this work, we describe a new electrode-less radio-frequency (RF) excitation technique for generating excimers in the vacuum ultraviolet (VUV) and ultraviolet (UV) spectral regions for potential biological/chemical applications. Spectra data of Xe2*, XeI*, and KrI* generated by this new technique are presented. Optical efficiency of the lamp system ranges from 3% to 6% for KrI*, 7% to 13% for XeI*, and 15% to 20% for Xe2*. Also, results of irradiating E-coli with XeI* discharge from this lamp system is presented to show one of the promising applications of such electrode-less apparatus. This new RF lamp system offers an interesting addition to the already existing technologies for generating VUV and UV light for various biological, physical, and chemical processes especially those requiring large area for high productivity.
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Received: 15 April 2017
Revised: 10 May 2017
Accepted manuscript online:
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PACS:
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33.20.Lg
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(Ultraviolet spectra)
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52.50.Dg
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(Plasma sources)
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52.80.Yr
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(Discharges for spectral sources)
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52.25.Os
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(Emission, absorption, and scattering of electromagnetic radiation ?)
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Corresponding Authors:
Joseph Ametepe
E-mail: jametepe@ggc.edu
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| About author: 0.1088/1674-1056/26/8/ |
Cite this article:
Joseph Ametepe, Sheng Peng, Dennis Manos Ultraviolet discharges from a radio-frequency system for potential biological/chemical applications 2017 Chin. Phys. B 26 083302
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