Electron temperature and density measurement by Thomson scattering with a high repetition rate laser of 20 kHz on LHD-Reference-Cited by-同舟云学术

Electron temperature and density measurement by Thomson scattering with a high repetition rate laser of 20 kHz on LHD

Published:2022-09-06 Issue:1 Volume:12 Page:
ISSN:2045-2322
Container-title:Scientific Reports
language:en
Short-container-title:Sci Rep

Author:

Funaba H.,Yasuhara R.,Uehara H.,Yamada I.,Sakamoto R.,Osakabe M.,Den Hartog D. J.

Abstract

AbstractThomson scattering measurements with a high-repetition-rate laser have commenced in the Large Helical Device. As an example of the fast phenomena captured by this diagnostic system, measurements at a 20 kHz repetition-rate in hydrogen pellet-injected plasmas are presented. Signal processing methods for this measurement have been developed and electron temperature profiles with almost 70 spatial points were evaluated at time intervals of 50

$$\upmu$$

μ s. After Raman scattering calibration, electron density profiles were derived. Fast changes in the electron temperature and density profiles within 1 ms were observed.

Funder

the Grant-in-Aid for Scientific Research (KAKENHI) of JSPS

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

Link

https://www.nature.com/articles/s41598-022-19328-9.pdf

Reference33 articles.

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