Abstract
This experiment investigates the effects of varying the pulse repetition rate of nanosecond plasma discharges on the generation of the hydroxyl radical in atmospheric pressure air. This study enables the analysis of the effects of increased energy injection on hydroxyl yield for air sterilization systems. A custom designed impulse generator was used to generate high voltage impulses with 100s of ns rise times. The presence of hydroxyl was measured using optical emission spectroscopy, with the relative change in measured intensity used to determine increases in the presences of OH• radicals. The resultant measured spectra showed an increase in hydroxyl intensities across the full A-X transitional band with a 3.9 times higher intensity observed in the P1(1) transition (308.12 nm) as a result of 1.6 times increase in power (2 kHz – 14 kHz). further pulse repetition rate increases showed minimal effects.
| Original language | English |
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| Title of host publication | 2024 10th Euro-Asian Pulsed Power Conference, 25th International Conference on High-Power Particle Beams and 20th International Symposium on Electromagnetic Launch Technology (EAPPC/BEAMS/EML) |
| Publisher | IEEE |
| Pages | 1-2 |
| Number of pages | 2 |
| ISBN (Electronic) | 978-90-386-6135-3 |
| ISBN (Print) | 979-8-3503-5273-3 |
| Publication status | Published - 13 Nov 2024 |
Funding
This work was supported by the Engineering and Physical Sciences Research Council (EPSRC grant No. EP/W524670/1)