Photoionization cross sections and radiative recombination rate coefficients for positive ions of carbon and gold

Technical Report · Thu Sep 01 04:00:00 EDT 1977

DOI:https://doi.org/10.2172/7211607· OSTI ID:7211607

Barfield, W D

Partial photoionization cross sections based on a nonhydrogenic single-electron model that utilizes Dirac--Slater wave functions and all necessary multipoles have been computed for C III-VI and Au + 8, +16, +24, and +36 for n = 1 - 6 and 10, 0 less than or equal to l < n. By use of detailed balance, radiative recombination rate coefficients are obtained for seven temperatures in the range 10 eV - 3 keV from the photoionization cross sections. The cross sections are compared with those obtained by others using semiclassical (Kramers) and hydrogenic models. In most cases, the recombination rate coefficients (summed over subshells) are larger than those computed using hydrogenic photoionization cross sections, by as much as a factor 30 (Au + 8, n = 5, kT = 43 keV). Analytical fits are given for the rate coefficients summed over l and n. The results are applicable to ionization balance and ion transport calculations for fusion reactors and the solar corona.

• Research Organization: Los Alamos Scientific Lab., N.Mex. (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 7211607
• Report Number(s): LA-6615
• Country of Publication: United States
• Language: English

Related Subjects

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Molecular &amp; Chemical Physics-- Collision Phenomena
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700105* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC IONS
CARBON IONS
CHARGED PARTICLES
CROSS SECTIONS
DIFFERENTIAL EQUATIONS
DIRAC EQUATION
EQUATIONS
GOLD IONS
IMPURITIES
IONIZATION
IONS
PHOTOIONIZATION
PLASMA
RECOMBINATION
WAVE EQUATIONS