Ion temperature measurements in the tokamak scrape-off layer with high temporal resolution

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00555703" target="_blank" >RIV/61389021:_____/21:00555703 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/21:00118880 RIV/00216208:11320/21:10439633

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1741-4326/abd41d" target="_blank" >https://iopscience.iop.org/article/10.1088/1741-4326/abd41d</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1741-4326/abd41d" target="_blank" >10.1088/1741-4326/abd41d</a>

Result language

angličtina

Original language name

Ion temperature measurements in the tokamak scrape-off layer with high temporal resolution

Original language description

We present a uniquely fast (10 μs) ion temperature measurements in the tokamak edge plasma. Our approach is based on the sweeping of a ball-pen probe, where the ion temperature is obtained by fitting the electron branch of the corresponding I-V characteristic. We have performed measurements on the COMPASS tokamak during L-mode discharge. The temperature histograms reveal a non-Gaussian shape with a high-temperature tail peaking at low values. The fitted values of fast I-V measurements can be used to reconstruct (emulate) the slow swept I-V characteristic of a retarding field analyzer. The resulting ion temperature profile is nearly flat and provides a ratio of ion to electron temperature close to 1-2 in the vicinity of the last closed flux surface during L-mode discharges, as observed on other tokamaks.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

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

Continuities

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

Publication year

2021

Confidentiality

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

Name of the periodical

Nuclear Fusion

ISSN

0029-5515

e-ISSN

1741-4326

Volume of the periodical

61

Issue of the periodical within the volume

3

Country of publishing house

AT - AUSTRIA

Number of pages

6

Pages from-to

036023

UT code for WoS article

000619572200001

EID of the result in the Scopus database

2-s2.0-85102184920