Simultaneous DC measurements of ion current density and electron temperature using a tunnel probe
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F16%3A00468309" target="_blank" >RIV/61389021:_____/16:00468309 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1742-6596/700/1/012018" target="_blank" >http://dx.doi.org/10.1088/1742-6596/700/1/012018</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/700/1/012018" target="_blank" >10.1088/1742-6596/700/1/012018</a>
Alternative languages
Result language
angličtina
Original language name
Simultaneous DC measurements of ion current density and electron temperature using a tunnel probe
Original language description
The tunnel probe is a concave Langmuir probe designed to operate in strongly magnetized plasma. Due to its shape, the tunnel probe is immune to sheath expansion effects and thus provides absolutely calibrated measurements of the parallel ion current density. A two-dimensional, self-consistent kinetic model is employed to model the flow of charges within the cavity of the tunnel probe. The calculation predicts that the distribution of the ion flux onto the inner conductors depends on the electric field inside the tunnel, which in turn depends on the electron temperature. Therefore, if the tunnel is divided into two negatively biased collectors, it is possible to use the simulation results to determine the electron temperature from the measured ion current ratio. This means that a DC-biased tunnel probe can be used to provide fast, simultaneous measurements of the parallel ion current density and the electron temperature without collecting a single electron. Measurements in the CASTOR and Tore Supra tokamaks agree well with the numerical simulations.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Journal of Physics Conference Series
ISBN
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ISSN
1742-6588
e-ISSN
1742-6596
Number of pages
7
Pages from-to
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Publisher name
IOP Publishing, Ltd.
Place of publication
Bristol
Event location
Sozopol
Event date
Sep 21, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000432421500018