Rotational analysis of the 0–0 and 1–1 bands of theA1Π–X1Σ+system of the AlD isoto

Fourier transform emission spectroscopy and ab initio calculations on the visible spectrum of AlD+

“…In this paper, we report the first Fourier transform (FT) spectroscopy of the A 2 Π − X 2 Σ + system of AlD + together with advanced ab initio calculations for this transition. The experimental part is a continuation of our recent work on the emission spectra of AlH [7,8,9,10], AlH + [11] and AlD [12,13]. The present high−quality FT data improves experimental information about A 2 Π and X 2 Σ + states of AlD + significantly.…”

The emission spectroscopy of AlD in the visible region: experimental and theoretical investigations

“…The present paper is a result of continuation of our recent spectroscopic studies on the emission spectra of AlH [33,34,35,36], AlH+ [37] and AlD [38] by high accuracy dispersive optical spectroscopy. The visible (VIS) spectra of the A 1 Π−X 1 Σ + and C 1 Σ + −A 1 Π systems of AlD are recorded by Fourier transform spectroscopy.…”

ExoMol linelists XXVIII: the rovibronic spectrum of AlH

“…Bands Method range in J/v Frequency range Comments Huron (1969) A 1 Π -X 1 Σ + Absorption spectroscopy v = 0 − 1 Rafi et al (1978) b 3 Σ + -a 3 Π Emission spectroscopy J = 3 − 16 1-1 band at 3808Å 3 P-branches, 3 R-branches, unresolved Q Baltayan & Nedelec (1979) A Urban & Jones (1992) vibrations Infrared diode laser v = 0 − 7 AlD Rice et al (1992) A 1 Π -X 1 Σ + Emission spectra v = 0, 1 13 -30 nm 0-0, 0-1, 1-0, 1-1, 1-2 bands Yamada & Hirota (1992) vibrations Ito et al (1994) ∆v = 1 Infrared emission v = 0 − 3, J = 0 − 22 1400 -1800 cm −1 Goto & Saito (1995) rotations Submillimeter J = 0 − 1 387 GHz hyperfine resolved Ram & Bernath (1996) A Tao et al (2003) b Halfen & Ziurys (2004) rotations Halfen & Ziurys (2010) rotations Direct absorption J = 0 − 4 393-590 GHz AlD Szajna & Zachwieja (2010) C Halfen & Ziurys (2014) rotations Direct absorption J = 1 − 4 755 -787 GHz AlH & AlD Szajna et al (2015) A…”

“…Our R-branch appears to be slightly stronger relative to the P-branch than the observations of White et al (1993), but given the variable baseline and presence of self-absorption in the observed spectrum this may not be significant. Figure 8 shows a comparison with the emission 0-0 and 1-1 bands of the A 1 Π -X 1 Σ + system of AlH and AlD by Szajna et al (2015). The observed spectrum was produced from an electric discharge in an aluminium hollow-cathode lamp.…”

“…The intensities of the AlD theoretical spectrum, given in blue and annotated in the experimental spectrum, are scaled by a factor 0.5. Reprinted from Szajna et al (2015), Copyright (2015), with permission from Elsevier.…”