Use of generalized population ratios to obtain Fe XV line intensities and linewidths at high electron densities

Journal Article · Fri Aug 01 00:00:00 EDT 1980 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.22.560· OSTI ID:5205720

Kastner, S O; Bhatia, A K

A generalized method for obtaining individual level population ratios is used to obtain relative intensities of extreme ultraviolet Fe XV emission lines in the range 284 --500 A, which are density dependent for electron densities in the tokamak regime or higher. Four lines in particular are found to attain quite high intensities in the high-density limit. The same calculation provides inelastic contributions to linewidths. The method connects level populations and level widths through total probabilities t/sub i/j, related to ''taboo'' probabilities of Markov chain theory. The t/sub i/j are here evaluated for a real atomic system, being therefore of potential interest to random-walk theorists who have been limited to idealized systems characterized by simplified transition schemes.

• Research Organization: Laboratory for Astronomy and Solar Physics, NASA-Goddard Space Flight Center, Greenbelt, Maryland 20771
• OSTI ID: 5205720
• Journal Information: Phys. Rev., A; (United States), Vol. 22:2
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
IRON IONS
EMISSION SPECTRA
TOKAMAK DEVICES
PLASMA DIAGNOSTICS
ENERGY LOSSES
LINE WIDTHS
MULTICHARGED IONS
ULTRAVIOLET SPECTRA
ATOMIC IONS
CHARGED PARTICLES
CLOSED PLASMA DEVICES
IONS
LOSSES
SPECTRA
THERMONUCLEAR DEVICES
700102* - Fusion Energy- Plasma Research- Diagnostics