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Measurements of OH radical concentrations in uniform and non-uniform nanosecond-pulsed dielectric barrier discharge plasma
DOE-Drexel-SC0021379
08 Dec 2022
Abstract
In this work we studied OH radical generation in nanosecond dielectric barrier discharge in humid He/air gas. The measurements were carried out by means of laser-induced fluorescence (LIF) method at the PPPL Low Temperature Plasma Research Facility, directed by Dr. Shurik Yatom. Application of LIF towards OH density measurements is a widely used approach in plasmas generated in humid gas, particularly when temporal evolution of OH density is of interest. Here we examined the OH densities generated in the discharge ignited by application of nanosecond high-voltage pulses with amplitudes varying between 10 to 20 kV and interelectrode gap length varying between 0.5-3 mm. The peak voltage and the gap length determine the mode in which discharge is generated: homogenous or filamentary. The measurements of OH in the gas phase were accompanied by the measurements of hydrogen peroxide (H2O2) in liquid water, downstream of the plasma and the relationship between these two were examined.
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Details
- Title
- Measurements of OH radical concentrations in uniform and non-uniform nanosecond-pulsed dielectric barrier discharge plasma
- Creators
- Danil Dobrynin - Drexel University
- Contributors
- Shurik Yatom (Contributor) - Drexel University
- Publication Details
- DOE-Drexel-SC0021379
- Publisher
- USDOE Office of Environment, Health, Safety and Security; United States
- Number of pages
- 4
- Grant note
- DOE Contract Number: SC0021379
- Resource Type
- Report
- Language
- English
- Academic Unit
- C. and J. Nyheim Plasma Institute
- Other Identifier
- 991020785744304721