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

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

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980phrva..22..560k&link_type=abstract

Physical Review A - General Physics, 3rd Series, vol. 22, Aug. 1980, p. 560-566.

Physics

General Physics

2

Extreme Ultraviolet Radiation, Iron, Laser Plasmas, Metallic Plasmas, Plasma Spectra, Spectral Line Width, Dense Plasmas, Electron Density (Concentration), Energy Technology, Markov Chains, Tokamak Devices, Transition Probabilities

Scientific paper

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(ij), related to 'taboo' probabilities of Markov chain theory. The t(ij) 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.

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