Advances in Langmuir probe diagnostics of the plasma potential and electron-energy distribution function in magnetized plasma

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F16%3A00460296" target="_blank" >RIV/61389021:_____/16:00460296 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/0963-0252/25/3/033001" target="_blank" >http://dx.doi.org/10.1088/0963-0252/25/3/033001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0963-0252/25/3/033001" target="_blank" >10.1088/0963-0252/25/3/033001</a>

Result language

angličtina

Original language name

Advances in Langmuir probe diagnostics of the plasma potential and electron-energy distribution function in magnetized plasma

Original language description

Advanced Langmuir probe techniques for evaluating the plasma potential and electron-energy distribution function (EEDF) in magnetized plasma are reviewed. It is shown that when the magnetic field applied is very weak and the electrons reach the probe without collisions in the probe sheath the second-derivative Druyvesteyn formula can be used for EEDF evaluation. At low values of the magnetic field, an extended second-derivative Druyvesteyn formula yields reliable results, while at higher values of the magnetic field, the first-derivative probe technique is applicable for precise evaluation of the plasma potential and the EEDF. There is an interval of intermediate values of the magnetic field when both techniques—the extended second-derivative and the first-derivative one—can be used. Experimental results from probe measurements in different ranges of magnetic field are reviewed and discussed: low-pressure argon gas discharges from 0.01 to 0.08 T, probe measurements in circular hydrogen plasmas for high-temperature fusion (magnetic fields from 0.45 T to 1.3 T) in small ISTTOK and CASTOR tokamaks, D-shape COMPASS tokamak plasmas and TJ-II stellarator.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Plasma Sources Science & Technology

ISSN

0963-0252

e-ISSN

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Volume of the periodical

25

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

18

Pages from-to

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UT code for WoS article

000376557400005

EID of the result in the Scopus database

2-s2.0-84973321197