Open AccessTheoretical values for the [O iii ] 5007/4959 line‐intensity ratio and homologous cases
Author(s) -
Storey P. J.,
Zeippen C. J.
Publication year - 2000
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2000.03184.x
Subject(s) - physics , doubly ionized oxygen , atomic physics , line (geometry) , magnetic dipole , ion , dipole , intensity (physics) , operator (biology) , work (physics) , quantum mechanics , chemistry , ionization , geometry , mathematics , biochemistry , repressor , transcription factor , gene
The magnetic‐dipole probabilities for the 1 D 2 – 3 P 2 and 1 D 2 – 3 P 1 transitions in carbon‐like and oxygen‐like ions are calculated up to atomic number Z =12, including relativistic corrections to the magnetic dipole operator. The ratio of the probabilities for these two transitions is found to change by up to 5 per cent compared with previous theoretical work, none of which included these relativistic corrections, with the effect being largest for the near neutral ions. The transition probability ratio for the [O iii ] 5007 and 4959 Å lines is found to be 3.01, implying an intensity ratio of 2.98, in significantly better agreement with the observed ratio than the earlier theoretical work.