Abstract
Laser Thomson scattering (LTS) was used for the first time to measure the non-Maxwellian electron velocity distribution function (EVDF) in an atmospheric-pressure-air pulsed positive streamer discharge. The air streamer was generated with specially designed electrode configuration which provided good spatial reproducibility. The LTS was conducted at a secondary streamer phase with a repetition rate of 2 Hz. To reduce the measurement error caused by intense rotational Raman scattering from N2 and O2, 20 000 LTS signals were accumulated. The LTS spectrum, which was a 1D-projected EVDF in the streamer, has shown a non-Maxwellian EVDF predicted by solving the Boltzmann equation. The measured EVDF exhibited good agreement with an EVDF calculated with E/N = 150 Td. Electron density at the initial phase of the secondary streamer was obtained from the LTS spectrum as 2.7 × 1014 cm−3.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
