Global frequency and intensity analysis of the ν10/ν7/

Abdulsamee Alkadrou

¹

,

M.T. Bourgeois

²

,

M. Rotger

³

et al.

The 2020 edition of the GEISA spectroscopic database

“…[112], however ignoring weak lines whose intensities are lower than 10 -30 cm -1 /(molecule cm -2 ) at 296 K. Note that errors in the degeneracies provided for the rotational levels in the 10 1 and 7 1 vibrational levels in the linelists of Refs. [112] and [113] were corrected (I. Gordon is acknowledged for bringing them to our attention). The positions and intensities of the 12 band lines were taken from GEISA-2015, excluding 187 lines having an intensity smaller than 10 -30 cm -1 /(molecule cm -2 ) at 296 K to be consistent with the information provided for the 10, 7 and 4 bands.…”

“…[114], the air-broadening coefficients were generated as described in [115], and the temperature dependence exponent n was set to 0.76, following the suggestion from Ref. [113]. In total, 52655 lines have been added…”

Calculated spectroscopic databases for the VAMDC portal: New molecules and improvements

“…A new global frequency and intensity analysis of the infrared tetrad of 12 C 2 H 4 (600-1500 cm −1 ), performed by Alkadrou et al in 2016 [32], produced a new set of parameters that generate 96 756 synthetic lines in the ν 10 , ν 7 , ν 4 and ν 12 bands of 12 C 2 H 4 . These lines have been introduced in the ECaSDa database using only one polyad scheme contrary to the choice that has been made in the previous update.…”