Spectroscopic measurements of impurity temperatures and parallel ion flows in the DIII-D divertor

Impurity ion temperatures and parallel flow velocities in the DIII-D divertor have been measured from the shapes and shifts of visible spectral lines of C II, C III, and B II. Spectral multiplet patterns are analyzed by fitting them to theoretical profiles that incorporate exact calculations for the...

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Bibliographic Details
Published in:Journal of nuclear materials 1999-03, Vol.266, p.376-379
Main Authors: Isler, R.C, Brooks, N.H, West, W.P, Leonard, A.W, McKee, G.R, Porter, G.D
Format: Article
Language:English
Subjects:
DIII-D
Divertor spectroscopy
Doppler broadening
Flow
Flow reversal
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Summary:Impurity ion temperatures and parallel flow velocities in the DIII-D divertor have been measured from the shapes and shifts of visible spectral lines of C II, C III, and B II. Spectral multiplet patterns are analyzed by fitting them to theoretical profiles that incorporate exact calculations for the Zeeman/Paschen-Back effect. Both normal flows toward the target plate and reversed flows away from the target plate are observed in the outer divertor leg; only flows toward the plate are detected in the inner leg.
ISSN:0022-3115
1873-4820
DOI:10.1016/S0022-3115(98)00824-1