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Saturation spectra of low lying states of Nitrogen: reconciling experiment with theory

par Carette, T.;Nemouchi, Messaoud;Jönsson, Per;Godefroid, Michel
Référence European Journal of Physics D, 60, page (231-242)
Publication Publié, 2010

Article révisé par les pairs

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Résumé :

The hyperfine constants of the levels 2p 2 ( 3P)3s 4P J, 2p 2 ( 3P)3p 4P o J and 2p 2 ( 3P)3p 4D o J, deduced by Jennerich et al. [Eur. Phys. J. D 40, 81 (2006)] from the observed hyperfine structures of the transitions 2p 2 ( 3P)3s 4P J→ 2p 2 ( 3P)3p 4P o J and 2p 2 ( 3P)3s 4P J→ 2p 2 ( 3P)3p 4D o J recorded by saturation spectroscopy in the near-infrared, strongly disagree with the ab initio values of Jönsson et al. [J. Phys. B: At. Mol. Opt. Phys. 43, 115006 (2010)]. We propose a new interpretation of the recorded weak spectral lines. If the latter are indeed reinterpreted as crossover signals, a new set of experimental hyperfine constants is deduced, in very good agreement with the ab initio predictions. © 2010 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.