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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Plasma Physics and Controlled Fusion

ISSN

0741-3335

e-ISSN

—

Svazek periodika

57

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

025003-025003

Kód UT WoS článku

000350133900003

EID výsledku v databázi Scopus

2-s2.0-84921475224