Published August 1986 | Version v1
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Electron density diagnostics by FE XXII line intensity ratio

Creators

Description

The electron density of a tokamak plasma is obtained by measuring the ratio of the line intensities for Fe XXII 2s22p(2P3/2) - 2s2p2(2P3/2) 114 A and 2s22p(2P1/2) - 2s2p2(2S1/2) 117 A. The intensity ratio of these lines is found useful for the density diagnostics in the range 1012 - 1015 cm-3, on account of its weak dependence on the temperature and of the proximity of these wavelengths. Proton and deuteron impacts are important for excitation from 2s22p(2P1/2) to 2s22p(2P3/2) and the resultant intensity for 114 A. (author)

Availability note (English)

MF available from INIS under the Report Number.

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Additional details

Publishing Information

Imprint Pagination
15 p.
Report number
IPPJ--787

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
18066904
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
ELECTRON TEMPERATURE; EMISSION SPECTRA; EMISSION SPECTROSCOPY; EXCITATION; IRON; METASTABLE STATES; PLASMA; PLASMA DENSITY; PLASMA DIAGNOSTICS; TOKAMAK DEVICES
Descriptors DEC
CLOSED PLASMA DEVICES; ELEMENTS; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; EXCITED STATES; METALS; SPECTRA; SPECTROSCOPY; THERMONUCLEAR DEVICES; TRANSITION ELEMENTS