Time-resolved electric field measurements during and after the initialization of a kHz plasma jet : from streamers to guided streamers

E.T. Slikboer, O.Y.N. Guaitella, A. Sobota

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Scopus)

Abstract

This work presents the investigation of a 30 kHz operated atmospheric pressure plasma jet impinging a dielectric BSO-crystal, allowing time-resolved electric field measurements based on the Pockels effect. Observations indicate that from the time the voltage is applied, the plasma first develops through unstable branching before a stable periodic behavior is established. This initialization of the plasma jet suggests the importance of the build-up of leftover ionization, which creates a preferred pathway for the streamer-like discharges. After initialization the time and spatially resolved electric field of guided ionization waves induced in the crystal is obtained, showing a highly periodic charging and discharging at the surface of the crystal. When the ionization wave arrives at the crystal charge is deposited and constant electric fields are generated for approximately 14 μs. Then a (back) discharge will remove the deposited charge at the surface, related to the moment when the applied voltage changes polarity and it agrees with imaging reported on in other literature.

LanguageEnglish
Article number03LT04
Pages1-6
JournalPlasma Sources Science and Technology
Volume25
Issue number3
DOIs
StatePublished - 17 May 2016

Fingerprint

plasma jets
electric fields
ionization
crystals
electric potential
birefringence
charging
atmospheric pressure
polarity
moments

Keywords

  • electric field
  • guided streamers
  • initialization
  • ionization waves
  • plasma jet
  • pockels effect
  • time resolved

Cite this

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abstract = "This work presents the investigation of a 30 kHz operated atmospheric pressure plasma jet impinging a dielectric BSO-crystal, allowing time-resolved electric field measurements based on the Pockels effect. Observations indicate that from the time the voltage is applied, the plasma first develops through unstable branching before a stable periodic behavior is established. This initialization of the plasma jet suggests the importance of the build-up of leftover ionization, which creates a preferred pathway for the streamer-like discharges. After initialization the time and spatially resolved electric field of guided ionization waves induced in the crystal is obtained, showing a highly periodic charging and discharging at the surface of the crystal. When the ionization wave arrives at the crystal charge is deposited and constant electric fields are generated for approximately 14 μs. Then a (back) discharge will remove the deposited charge at the surface, related to the moment when the applied voltage changes polarity and it agrees with imaging reported on in other literature.",
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Time-resolved electric field measurements during and after the initialization of a kHz plasma jet : from streamers to guided streamers. / Slikboer, E.T.; Guaitella, O.Y.N.; Sobota, A.

In: Plasma Sources Science and Technology, Vol. 25, No. 3, 03LT04, 17.05.2016, p. 1-6.

Research output: Contribution to journalArticleAcademicpeer-review

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