Physics
Scientific paper
Jun 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976znata..31..565n&link_type=abstract
Zeitschrift für Naturforschung, Teil a, vol. 31 a, June 1976, p. 565-568. Research supported by the University Grants Commissio
Physics
Electron-Ion Recombination, Emission Spectra, Helium Ions, Ionization Coefficients, Solar Corona, Abundance, Atomic Collisions, Equilibrium, Temperature Effects
Scientific paper
The approach employed in the study of the ionization equilibrium of helium is based on a use of the ionization rate coefficients reported by Lotz (1967, 1968). A modified version of an expression obtained by Landini and Monsignori Fossi (1971) is also employed. It is pointed out that the ionization rate coefficients used differ from those given by Seaton (1964). The maximum abundance of He(+) lies in the range from 0.55 to 0.70 eV. The inclusion of dielectronic recombination is found to broaden the peak for the maximum abundance of He(+).
Chandra Sharat
Jain N. K.
Narain Udit
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