ROTATIONAL ANALYSIS OF THE MOLECULAR HYDROGEN TRIPLET 3s,d COMPLEX REVISITED

Denise Bailly (1) , Michel Vervloet (2)

1 UP11 - Université Paris-Sud - Paris 11
2 SSOLEIL - Synchrotron SOLEIL

The emission spectrum of neutral diatomic hydrogen has been recorded at Doppler width limited resolution by Fourier transform spectroscopy in the spectral range 1800 - 22500 cm^-1. Rotational analysis of the triplet systems involving the electronic states c ³Π_u , a ³Σ⁺_g, e ³Σ⁺_u, and the 3s,d complex has been carried out in order to determine precise rovibronic energies (with v = 0 to 3) of the 3s,d complex. This new observation agrees with the earlier calculations [3,4,5] within a few cm-1 and corrects incorrect 'observed' level energies published for v = 2 and 3, h(3s) ³Σ⁺_g in [1,2] and [2] by about 50 and 90 cm^-1 respectively.

Mots clés: Physical Sciences

Denise Bailly, Michel Vervloet. ROTATIONAL ANALYSIS OF THE MOLECULAR HYDROGEN TRIPLET 3s,d COMPLEX REVISITED. Molecular Physics, 2007, 105 (11-12), pp.1559-1564. ⟨10.1080/00268970701308448⟩. ⟨hal-00513091⟩