Investigation of diffuse current in arc boundary by electric probes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F05%3A00022354" target="_blank" >RIV/61389021:_____/05:00022354 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Investigation of diffuse current in arc boundary by electric probes

Original language description

Electric probes were used for investigation of an intermediate layer between the arc and anode surface in regions outside the main current channel. Distributions of a diffuse current and the potential were measured. Resistance and heating of the intermediate layer by diffuse current were evaluated.It was found that not only the value of diffuse current strongly depends on distance from the arc but also the shape of the distribution and the position of the maximum of the current change with the distance.These trends can be explained by expanding of the plasma jet. Evaluated equivalent intermediate layer resistance shows widening of the conductive region in a stream wise direction. Variation of resistivity of the intermediate layer is much higher than variation of the potential drop on the layer. That means that distributed current as well as Joule heating of the layer are generally controlled by distributed resistance.

Czech name

Studium difuzního proudu na hranici oblouku pomocí elektrických sond

Czech description

Bylo měřeno rozdělení difuzního proudu a potenciálu v přechodové oblasti mezi elektrickým obloukem a povrchem anody. Na vzdálenosti anody závisí nejen proud, ale i tvar rozdělení a poloha maxima. Vodivá oblast se rozšiřuje ve směru proudu, změny vodivosti jsou větší než spád potenciálu na vrstvě.

Type

D - Article in proceedings

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2005

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings XVIth Symposium on Physics of Switching Arc

ISBN

80-214-2931-3

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

36-39

Publisher name

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Place of publication

Brno

Event location

Brno

Event date

Sep 5, 2005

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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