First simultaneous measurements of Reynolds stress with ball-pen and Langmuir probes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F17%3A00476139" target="_blank" >RIV/61389021:_____/17:00476139 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/17:00316122

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.4984240" target="_blank" >http://dx.doi.org/10.1063/1.4984240</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4984240" target="_blank" >10.1063/1.4984240</a>

Jazyk výsledku

angličtina

Název v původním jazyce

First simultaneous measurements of Reynolds stress with ball-pen and Langmuir probes

Popis výsledku v původním jazyce

A new multi-pin probe head was installed and tested at the COMPASS tokamak. The probe head consists of several ball-pen and Langmuir probes in similar geometric configurations, which enables fast, simultaneous measurements of the radial and poloidal electric field components from differences of plasma or floating potentials using appropriately positioned ball-pen or Langmuir probes, respectively. The fast measurements of the radial electric field are compared with other methodsnof measuring selected frequency components of the radial electric field. The radial profiles of the Reynolds stress calculated from correlations of electric field fluctuations obtained by either probe type are compared along with their spectral composition. Lower Reynolds stress values are found for Langmuir probes in comparison to ball-pen probes due to negative contributions from higher frequency fluctuations possibly associated with electron temperature fluctuations.

Název v anglickém jazyce

First simultaneous measurements of Reynolds stress with ball-pen and Langmuir probes

Popis výsledku anglicky

A new multi-pin probe head was installed and tested at the COMPASS tokamak. The probe head consists of several ball-pen and Langmuir probes in similar geometric configurations, which enables fast, simultaneous measurements of the radial and poloidal electric field components from differences of plasma or floating potentials using appropriately positioned ball-pen or Langmuir probes, respectively. The fast measurements of the radial electric field are compared with other methodsnof measuring selected frequency components of the radial electric field. The radial profiles of the Reynolds stress calculated from correlations of electric field fluctuations obtained by either probe type are compared along with their spectral composition. Lower Reynolds stress values are found for Langmuir probes in comparison to ball-pen probes due to negative contributions from higher frequency fluctuations possibly associated with electron temperature fluctuations.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21100 - Other engineering and technologies

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Review of Scientific Instruments

ISSN

0034-6748

e-ISSN

—

Svazek periodika

88

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

—

Kód UT WoS článku

000404641300015

EID výsledku v databázi Scopus

2-s2.0-85020257420