Comparison of fluctuations properties measured by Langmuir and ball-pen probes in the ISTTOK boundary plasma

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F15%3A00443538" target="_blank" >RIV/61389021:_____/15:00443538 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/0741-3335/57/2/025003" target="_blank" >http://dx.doi.org/10.1088/0741-3335/57/2/025003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0741-3335/57/2/025003" target="_blank" >10.1088/0741-3335/57/2/025003</a>

Result language

angličtina

Original language name

Comparison of fluctuations properties measured by Langmuir and ball-pen probes in the ISTTOK boundary plasma

Original language description

In this work, the fluctuations properties measured by Langmuir and ball-pen probes are compared, aiming at investigating the influence of temperature fluctuations on Langmuir probe measurements, including the cross-field turbulent particle flux. With this aim, a 5-pin probe was designed to estimate the radial particle transport due to fluctuations simultaneously using Langmuir and ball-pen probes. A considerable difference is observed in the amplitude of the floating potential fluctuations measured by the two types of probes, but not in statistical properties such as skewness. The turbulent particle flux was found to be roughly four times larger when measured with Langmuir probes. Finally, it is suggested that ball-pen and emissive probes may underestimate the amplitude of the plasma potential fluctuations and therefore probe measurements must be carefully validated.

Czech name

—

Czech description

—

Type

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

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

—

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

2015

Confidentiality

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

Name of the periodical

Plasma Physics and Controlled Fusion

ISSN

0741-3335

e-ISSN

—

Volume of the periodical

57

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

025003-025003

UT code for WoS article

000350133900003

EID of the result in the Scopus database

2-s2.0-84921475224