Work

Study of Intensity Ratios of He I Lines (668nm, 706nm and 728nm) for Measurement of Electron Temperature and Density in the JT-60U Divertor Plasma.

Year: 1999

Type: article

Abstract: Emission of He I lines (668nm, 706 nm and 728nm) has been simultaneously observed in the JT-60U divertor plasma. From calculations using a collisional-radiative model, intensity ratios of these He I lines are considered to be useful to measure electron temperature and density. In order to evaluate the feasibility of the intensity ratio method for temperature and density measurements, the measured intensity ratios are compared with those calculated from the temperature and density measured with Langmuir probes. As a result, the measured intensity ratios are well reproduced by the calculations. The discrepancies in the ratios I (728nm)/I (706nm) and I (668 nm)/I (728nm) between the measurements and calculations are about 12%.

Source: プラズマ・核融合学会誌

DOI: 10.1585/jspf.75.945

Authors: Hirotaka KUBO, Motoshi GOTO, Hidenobu TAKENAGA, Akira KUMAGAI, Tatsuo SUGIE, Shinji SAKURAI, Nobuyuki ASAKURA, Satoru HIGASHIJIMA, Akira SAKASAI

Institutions: Japan Atomic Energy Agency, National Institute for Fusion Science, University of Tsukuba, Plasma Research Center, University of Tsukuba

Language: English

Topic: Magnetic confinement fusion research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W1968156206

FWCI: 0.186

Cites: 15

Cited by: 28

Related to: 10