Excitation of semi-forbidden 2s22p23P-2s2p35S0and 2s2p2P0-2s2p24P lines observed in quasars
- 1 November 1973
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 6 (11) , 2325-2333
- https://doi.org/10.1088/0022-3700/6/11/028
Abstract
Collisional excitation by free electrons of transitions in various ions of the type 2s22pq-2s2pq+1, determines the strength of many semi-forbidden lines observed in quasars. Collision strengths for the transitions N+ and O2+ 2s22p2 3P-2s2p3 5S0, and N2+ 2s22p 2P0-2s2p2 4P are calculated from solutions of coupled integro-differential equations. In all cases allowance is made for configuration interaction between 2s22pq and 2pq+2, and all 2s2pq+1 channels are included.Keywords
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