Abstract
Certain transitions of C IV (C3+) from n=7 to n=6 (≈7226 Å) and from n=6 to n=5 (≈=4660 Å) sometimes appear much brighter in tokamak divertors than expected for electron-impact excitation from the ground state. This situation occurs because of charge exchange between C V (C4+) and recycling thermal deuterium atoms in the n=2 level. As a result, it is possible to extend parallel flow measurements of carbon, which have previously been performed on C II-C IV ions using Doppler shift spectroscopy, to include flows of the He-like C V ions. The work described here includes modeling of the spectral features, correlation of state populations with classical Monte Carlo trajectory (CTMC) predictions, and applications to flow measurements in the DIII-D divertor [Plasma Physics Controlled Nuclear Fusion Research 1986 (International Atomic Energy Agency, Vienna, 1987), Vol. I, p. 159; Proceedings of the 18th IEEE/NPSS Symposium on Fusion Engineering, Albuquerque (Institute of Electrical and Electronic Engineers, Piscataway, 1999), p. 515]. © 2001 American Institute of Physics.
Recommended Citation
B. Zaniol et al., "Measurements of C V Flows from Thermal Charge-exchange Excitation in Divertor Plasmas," Physics of Plasmas, vol. 8, no. 10, pp. 4386 - 4389, American Institute of Physics, Oct 2001.
The definitive version is available at https://doi.org/10.1063/1.1395569
Department(s)
Physics
Publication Status
Available Access
International Standard Serial Number (ISSN)
1070-664X
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 American Institute of Physics, All rights reserved.
Publication Date
01 Oct 2001
