Effective collision strengths for 1s-2s and 1s-2p electron-hydrogen atom scattering

Details Effective collision strengths for 1s-2s and 1s-2p electron-hydrogen atom scattering Effective collision strengths for 1s-2s and 1s-2p electron-hydrogen atom scattering

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.242..692s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 242, Feb. 15, 1990, p. 692-697. Research supported by S

Astronomy and Astrophysics

Astrophysics

22

Atomic Collisions, Collision Rates, Electron Scattering, Hydrogen Atoms, Hydrogen Plasma, Plasma Temperature, Astrophysics, Born Approximation, Oscillator Strengths

Scientific paper

Extensive electron-hydrogen atom scattering calculations have recently been performed using a hybrid model which employs intermediate energy R-matrix theory, pseudostate close-coupling, and the second Born approximation. The resulting 1s-2s and 1s-2p cross-sections have been integrated over a Maxwellian electron energy distribution to yield effective collision strengths and rate coefficients for excitation to the n = 2 levels of the hydrogen atom. These parameters are reported for plasma temperatures ranging from 5000 to 500,000, and are fitted to simple analytic formulas.

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