Fe14+ and Fe15+ Spatial Distributions in a LHD Plasma Reconstructed from Multiple-Viewing-Chord EUV-Emission Observation

Yanagibayashi, Jun; Goto, M.; Dong, Chengli; Morita, S.; Hasuo, Masahiro

doi:10.1585/pfr.6.2402060

Plasma and Fusion Research

2011

DOI: 10.1585/pfr.6.2402060

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Fe14+ and Fe15+ Spatial Distributions in a LHD Plasma Reconstructed from Multiple-Viewing-Chord EUV-Emission Observation

Jun Yanagibayashi

M. Goto

Chengli Dong

et al.

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Cited by 2 publications

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“…The profiles are reconstructed into a function of magnetic surfaces using a three-dimensional equilibrium code, VMEC, 6) including a finite -effect. Then, profiles of the absolute value of local emissivity are obtained on the basis of the Abel inversion technique, 7) as shown in Fig. 2.…”

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confidence: 99%

Accurate Determination of Iron Density in Large Helical Device Based on Absolute Intensity Profile Measurement of Extreme Ultraviolet Spectral Lines

Dong

Morita

Goto

et al. 2011

Jpn. J. Appl. Phys.

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An iron density profile is accurately determined in Large Helical Device (LHD) using a space-resolved extreme ultraviolet (EUV) spectrometer, the absolute intensity calibration of which is carried out by bremsstrahlung continuum measurement. The effective intensity coefficients R (eV cm3 s-1) of FeXV to FeXXIV are precisely calculated on the basis of a collisional-radiative model for iron density determination. The total iron density at the plasma center is found to be almost 4 or 5 orders of magnitude smaller than the electron density. The application of the present result to the study of impurity transport demonstrates a new way of examining the radial structure of transport coefficients and of determining the total impurity density.

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confidence: 99%

Accurate Determination of Iron Density in Large Helical Device Based on Absolute Intensity Profile Measurement of Extreme Ultraviolet Spectral Lines

Dong

Morita

Goto

et al. 2011

Jpn. J. Appl. Phys.

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Accurate Determination of Iron Density in Large Helical Device Based on Absolute Intensity Profile Measurement of Extreme Ultraviolet Spectral Lines

Dong¹,

Morita²,

Goto³

et al. 2012

Jpn. J. Appl. Phys.

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Fe14+ and Fe15+ Spatial Distributions in a LHD Plasma Reconstructed from Multiple-Viewing-Chord EUV-Emission Observation

Cited by 2 publications

References 9 publications

Accurate Determination of Iron Density in Large Helical Device Based on Absolute Intensity Profile Measurement of Extreme Ultraviolet Spectral Lines

Accurate Determination of Iron Density in Large Helical Device Based on Absolute Intensity Profile Measurement of Extreme Ultraviolet Spectral Lines

Accurate Determination of Iron Density in Large Helical Device Based on Absolute Intensity Profile Measurement of Extreme Ultraviolet Spectral Lines

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