Effective collision strengths for intermultiplet 2s 2p(4) to 2s(2) 2p(2) 3s, and 2s(2) 2p(3) and 2s(2) 2p(2) 3s to 2s(2) 2p(2) 3s optically forbidden transitions of O II

Details Effective collision strengths for intermultiplet 2s 2p(4) to 2s(2) 2p(2) 3s, and 2s(2) 2p(3) and 2s(2) 2p(2) 3s to 2s(2) 2p(2) 3s optically forbidden transitions of O II Effective collision strengths for intermultiplet 2s 2p(4) to 2s(2) 2p(2) 3s, and 2s(2) 2p(3) and 2s(2) 2p(2) 3s to 2s(2) 2p(2) 3s optically forbidden transitions of O II

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.267..231m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 267, no. 2, p. 231-234

Astronomy and Astrophysics

Astrophysics

7

Atomic Collisions, Electron Scattering, Forbidden Transitions, Molecular Excitation, Oxygen Ions, Astrophysics, Collision Parameters, Fine Structure, Ionization Potentials, Maxwell-Boltzmann Density Function, Planetary Nebulae

Scientific paper

Accurate data are provided for the first time on electron collisional excitation of the O II ion from the 1s(2) 2s 2p(4) (2,4)P(e), (2)D(e), (2)P(e) and (2)S(e) states to the n = 3 terms, namely, the 1s(2)2s(2)2p(2)3s(2,4)P(e), (2)D(e), (2)P(e) and (2)S(e) states; from the 1s(2)2s(2)2p(3)(4)S(0), (2)D(0) and (2)P(0) states to the 1s(2)2s(2)2p(2)3s(2,4)P(e), (2)D(e), (2)P(e) and (2)S(e) states; and for selected 1s(2)2s(2)p(2)3s inter-multiplet transitions. The electron collisional excitation strengths Omega, from an 11-state R-matrix calculation performed in LS coupling, are convoluted with a Maxwellian velocity distribution to obtain effective collision strengths upsilon for a range of temperatures from 5000 to 106 K.

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