Low-energy electron collisions with C2 using the R-matrix method

Halmov'a, Gabriela; Gorfinkiel, J. D. and Tennyson, Jonathan (2006). Low-energy electron collisions with C2 using the R-matrix method. Journal of Physics B: Atomic, Molecular and Optical Physics, 39(12) pp. 2849–2860.

DOI: https://doi.org/10.1088/0953-4075/39/12/018

URL: http://stacks.iop.org/0953-4075/39/2849

Abstract

Calculations are presented for the bound and continuum states of the C[?]2 system using the polyatomic version of the UK molecular R-matrix code. The calculations, based on a 26-state close-coupling expansion, show the presence of three bound doublet states of C[?]2 and a quartet state that only becomes bound at large internuclear separation. A number of resonance states are found and their behaviour as a function of the C2 bond length is studied. Cross sections for electron impact electronic excitation are presented with particular emphasis on excitation of the d 3Pg state which is responsible for the well-known Swan emission bands.

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