VUV Fourier-transform absorption study of the Lyman and Werner bands in D2

Abstract

An extensive survey of the D 2 absorption spectrum has been performed with the high-resolution VUV Fourier-transform spectrometer employing synchrotron radiation. The frequency range of 90 000-119 000 cm electronic states correlate with the D(1s) + D(3 ) dissociation limit, but support a few vibrational levels below the second dissociation limit, respectively, v = 0-3 and v = 0-1, and are also included in the presented study. The complete set of resulting level energies is the most comprehensive and accurate data set for D 2 . The observations are compared with previous studies, both experimental and theoretical.

B1Σu+ and Salumbides1, Bailly2, Vervloët3 et al. 2014Journal of Molecular Spectroscopy4000View full textAdd to dashboardCite

“…The comparison of the present data set and Ref. [16] reveals that the values of the latter are 0.02 cm À1 lower than the present data set (see Fig. 5).…”

“…5). This offset is still within the estimated uncertainties of 0.03 cm À1 by de Lange et al [16], nevertheless, the systematic Table 2 Level energies (term values) in the B 1 R þ u state of D 2 for vibrational levels v = 0-8.…”

“…The database in Ref. [16] included all bound level energies in the [11], which showed that the values of the latter are systematically higher by 0.01 cm À1 . De Lange et al also made a comparison with the semi-empirical study of Abgrall et al [13], based on the experimental results reported by Freund et al [17].…”

“…The recent work of de Lange et al [16] presents an accurate and comprehensive data set for D 2 B 1 R þ u level energies obtained from…”

“…Early, classical spectroscopic studies of the Lyman bands of D 2 were performed by Herzberg and coworkers [9,10], later followed by XUV-laser spectroscopic studies at increasing resolution and precision [11,12], albeit only for a relatively small subset of bands in the Lyman system. More comprehensive studies, delivering spectroscopic information on a large set of rovibrational levels, involved electron scattering induced emission studies [13] (with a full database provided [14]), laser probing of highly excited rovibrational levels in a plasma [15], and a VUV Fourier-transform absorption study [16].…”