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Influence of the capillary on the ignition of the transient spark discharge.

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Title: Influence of the capillary on the ignition of the transient spark discharge.
Authors: Gerling, T.1 gerling@inp-greifswald.de, Hoder, T.1 hoder@inp-greifswald.de, Brandenburg, R.1, Bussiahn, R.1, Weltmann, K-D1
Source: Journal of Physics D: Applied Physics. 2013, Vol. 46 Issue 14, p1-7. 7p.
Subjects: Direct currents, Spatio-temporal variation, Corona discharge, Electric fields, Dielectrics research
Abstract: A self-pulsing negative dc discharge in argon generated in a needle-to-plane geometry at open atmosphere is investigated. Additionally, the needle electrode can be surrounded by a quartz capillary. It is shown that the relative position of the capillary end to the needle tip strongly influences the discharge inception and its spatio-temporal dynamics. Without the capillary for the selected working parameters a streamer corona is ignited, but when the capillary surrounds the needle, the transient spark (TS) discharge is ignited after a pre-streamer (PS) occurs. The time between PS and TS discharge depends on the relative capillary end position. The existence of the PS is confirmed by electro-optical characterization. Furthermore, spectrally and spatio-temporally resolved cross-correlation spectroscopy is applied to show the most active region of pre-phase emission activity as indicators for high local electric field strength. The results indicate that with a capillary in place, the necessary energy input of the pre-phase into the system is mainly reduced by additional electrical fields at the capillary edge. Even such a small change as a shift of dielectric surface close to the plasma largely changes the energy balance in the system. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Physics D: Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 90118607
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PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Influence of the capillary on the ignition of the transient spark discharge.
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  Data: <searchLink fieldCode="AR" term="%22Gerling%2C+T%2E%22">Gerling, T.</searchLink><relatesTo>1</relatesTo><i> gerling@inp-greifswald.de</i><br /><searchLink fieldCode="AR" term="%22Hoder%2C+T%2E%22">Hoder, T.</searchLink><relatesTo>1</relatesTo><i> hoder@inp-greifswald.de</i><br /><searchLink fieldCode="AR" term="%22Brandenburg%2C+R%2E%22">Brandenburg, R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bussiahn%2C+R%2E%22">Bussiahn, R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Weltmann%2C+K-D%22">Weltmann, K-D</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Physics+D%3A+Applied+Physics%22">Journal of Physics D: Applied Physics</searchLink>. 2013, Vol. 46 Issue 14, p1-7. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Direct+currents%22">Direct currents</searchLink><br /><searchLink fieldCode="DE" term="%22Spatio-temporal+variation%22">Spatio-temporal variation</searchLink><br /><searchLink fieldCode="DE" term="%22Corona+discharge%22">Corona discharge</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+fields%22">Electric fields</searchLink><br /><searchLink fieldCode="DE" term="%22Dielectrics+research%22">Dielectrics research</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A self-pulsing negative dc discharge in argon generated in a needle-to-plane geometry at open atmosphere is investigated. Additionally, the needle electrode can be surrounded by a quartz capillary. It is shown that the relative position of the capillary end to the needle tip strongly influences the discharge inception and its spatio-temporal dynamics. Without the capillary for the selected working parameters a streamer corona is ignited, but when the capillary surrounds the needle, the transient spark (TS) discharge is ignited after a pre-streamer (PS) occurs. The time between PS and TS discharge depends on the relative capillary end position. The existence of the PS is confirmed by electro-optical characterization. Furthermore, spectrally and spatio-temporally resolved cross-correlation spectroscopy is applied to show the most active region of pre-phase emission activity as indicators for high local electric field strength. The results indicate that with a capillary in place, the necessary energy input of the pre-phase into the system is mainly reduced by additional electrical fields at the capillary edge. Even such a small change as a shift of dielectric surface close to the plasma largely changes the energy balance in the system. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Physics D: Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1088/0022-3727/46/14/145205
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      – Code: eng
        Text: English
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        PageCount: 7
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      – SubjectFull: Direct currents
        Type: general
      – SubjectFull: Spatio-temporal variation
        Type: general
      – SubjectFull: Corona discharge
        Type: general
      – SubjectFull: Electric fields
        Type: general
      – SubjectFull: Dielectrics research
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      – TitleFull: Influence of the capillary on the ignition of the transient spark discharge.
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              Text: 2013
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