Time behaviours of visible lines in turbulently heated TRIAM-1 plasma

Naoji Hiraki; Kazuo Nakamura; Yukio Nakamura; Satoshi Itoh

doi:10.1143/JJAP.20.1507

Time behaviours of visible lines in turbulently heated TRIAM-1 plasma

Naoji Hiraki, Kazuo Nakamura, Yukio Nakamura, Satoshi Itoh

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article › peer-review

Abstract

Spectroscopic studies were carried out on turbulently heated TRIAM-1 tokamak plasma. The temporal evolutions of the line radiance of visible lines were measured and two types of time behaviours of the line radiance were identified. The observed remarkable reduction of the line radiance of visible lines which have low ionization potential and are localized in the skin-layer due to the application of a pulsed electric-field for turbulent heating is attributed to the strong plasma heating in the peripherical region. Spatial profiles of neutrals and ions which are related to these lines are calculated, and the temporal variations of these profiles caused by the application of the heating pulse are discussed.

Original language	English
Pages (from-to)	1507-1513
Number of pages	7
Journal	Japanese Journal of Applied Physics
Volume	20
Issue number	8
DOIs	https://doi.org/10.1143/JJAP.20.1507
Publication status	Published - Aug 1981

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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title = "Time behaviours of visible lines in turbulently heated TRIAM-1 plasma",

abstract = "Spectroscopic studies were carried out on turbulently heated TRIAM-1 tokamak plasma. The temporal evolutions of the line radiance of visible lines were measured and two types of time behaviours of the line radiance were identified. The observed remarkable reduction of the line radiance of visible lines which have low ionization potential and are localized in the skin-layer due to the application of a pulsed electric-field for turbulent heating is attributed to the strong plasma heating in the peripherical region. Spatial profiles of neutrals and ions which are related to these lines are calculated, and the temporal variations of these profiles caused by the application of the heating pulse are discussed.",

author = "Naoji Hiraki and Kazuo Nakamura and Yukio Nakamura and Satoshi Itoh",

year = "1981",

month = aug,

doi = "10.1143/JJAP.20.1507",

language = "English",

volume = "20",

pages = "1507--1513",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

issn = "0021-4922",

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number = "8",

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T1 - Time behaviours of visible lines in turbulently heated TRIAM-1 plasma

AU - Hiraki, Naoji

AU - Nakamura, Kazuo

AU - Nakamura, Yukio

AU - Itoh, Satoshi

PY - 1981/8

Y1 - 1981/8

N2 - Spectroscopic studies were carried out on turbulently heated TRIAM-1 tokamak plasma. The temporal evolutions of the line radiance of visible lines were measured and two types of time behaviours of the line radiance were identified. The observed remarkable reduction of the line radiance of visible lines which have low ionization potential and are localized in the skin-layer due to the application of a pulsed electric-field for turbulent heating is attributed to the strong plasma heating in the peripherical region. Spatial profiles of neutrals and ions which are related to these lines are calculated, and the temporal variations of these profiles caused by the application of the heating pulse are discussed.

AB - Spectroscopic studies were carried out on turbulently heated TRIAM-1 tokamak plasma. The temporal evolutions of the line radiance of visible lines were measured and two types of time behaviours of the line radiance were identified. The observed remarkable reduction of the line radiance of visible lines which have low ionization potential and are localized in the skin-layer due to the application of a pulsed electric-field for turbulent heating is attributed to the strong plasma heating in the peripherical region. Spatial profiles of neutrals and ions which are related to these lines are calculated, and the temporal variations of these profiles caused by the application of the heating pulse are discussed.

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