TY - JOUR
T1 - Measurement of electron velocity distribution function in a pulsed positive streamer discharge in atmospheric-pressure air
AU - Tomita, Kentaro
AU - Inada, Yuki
AU - Komuro, Atsushi
AU - Zhang, Xiang
AU - Uchino, Kiichiro
AU - Ono, Ryo
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
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U2 - 10.1088/1361-6463/ab58b4
DO - 10.1088/1361-6463/ab58b4
M3 - Article
AN - SCOPUS:85079538072
VL - 53
JO - Journal Physics D: Applied Physics
JF - Journal Physics D: Applied Physics
SN - 0022-3727
IS - 8
M1 - 08LT01
ER -