Ionization equilibrium and radiative energy loss rates for C, N, and O ions in low-density plasmas

Details Ionization equilibrium and radiative energy loss rates for C, N, and O ions in low-density plasmas Ionization equilibrium and radiative energy loss rates for C, N, and O ions in low-density plasmas

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jqsrt..19..591j&link_type=abstract

Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 19, June 1978, p. 591-598. NASA-supported research.

Physics

35

Electron-Ion Recombination, Energy Dissipation, Plasma-Particle Interactions, Radiative Recombination, Radiative Transfer, Rarefied Plasmas, Carbon, Electric Corona, Electron Impact, Equilibrium Equations, Ion Temperature, Ionic Reactions, Nitrogen Ions, Oxygen Ions

Scientific paper

The results of calculations of the ionization equilibrium and radiative energy loss rates for C, N and O ions in low-density plasmas are presented for electron temperatures in the range 10,000-10,000,000 K. The ionization structure is determined by using the steady-state corona model, in which electron impact ionization from the ground states is balanced by direct radiative and dielectronic recombination. With an improved theory, detailed calculations are carried out for the dielectronic recombination rates in which account is taken of all radiative and autoionization processes involving a single-electron electric-dipole transition of the recombining ion. The radiative energy loss processes considered are electron-impact excitation of resonance line emission, direct radiative recombination, dielectronic recombination, and electron-ion bremsstrahlung. For all three elements, resonance line emission resulting from 2s-2p transitions produces a broad maximum in the energy loss rate near 100,000 K.

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