Electron density diagnostics for Ti XIV in high temperature plasmas

Details Electron density diagnostics for Ti XIV in high temperature plasmas Electron density diagnostics for Ti XIV in high temperature plasmas

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phys...43..147k&link_type=abstract

Physica Scripta (ISSN 0031-8949), vol. 43, Feb. 1991, p. 147-149.

Astronomy and Astrophysics

Astrophysics

1

Electron Density (Concentration), Emission Spectra, High Temperature Plasmas, Metallic Plasmas, Plasma Spectra, Titanium, Cosmic Plasma, Forbidden Transitions, Isoelectronic Sequence, Line Spectra

Scientific paper

Recent R-matrix calculations of electron excitation rates for transitions in Ti XIV are used to derive two different theoretical emission-line ratios as a function of the electron density values from 10 to the 10 to 10 to the 14/cu cm. The density values are applicable to astrophysical and tokamak plasmas. The results are found to be significantly different from those deduced if the distorted-wave electron rates of Bhatia et al. (1985) are adopted in the calculations. The results also lead to electron density estimates between a factor of 1.6 larger and 30 percent smaller for electron temperatures in the 1.5-6 x 10 to the 6 K range.

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