Collisional excitation rates of complex atomic ions by electron impact

Abstract

view Abstract Citations (36) References (7) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Collisional excitation rates of complex atomic ions by electron impact Clark, R. E. H. ; Magee, N. H., Jr. ; Mann, J. B. ; Merts, A. L. Abstract For many applications, a large number of rate coefficients for electron impact excitation are needed. These rate coefficients may be obtained by integration of the collision strength. Fits to collision strengths are presented as a function of both the nuclear change Z and X, the impact electron energy in threshold units. The collision strength fit form is readily integrated over a Maxwellian distribution and has fitted extensive distorted wave data to nearly 5% from singly ionized stages to molybdenum for 19 spin-allowed transitions of the isoelectric sequences of hydrogen, helium, lithium, beryllium, boron, sodium, and magnesium. The excitation energies have been fitted as a function of Z to better than 1%. Publication: The Astrophysical Journal Pub Date: March 1982 DOI: 10.1086/159746 Bibcode: 1982ApJ...254..412C Keywords: Atomic Collisions; Atomic Excitations; Collision Rates; Electron Impact; Electron Transitions; Curve Fitting; Ionic Collisions; Isoelectronic Sequence; Maxwell-Boltzmann Density Function; Wave Interaction; Atomic and Molecular Physics full text sources ADS |