Fourier Transform Emission Spectroscopy of a New 2Φ–12Δ System of VO

Emission spectroscopy of a new 2Δ–12Δ system of VO

“…These bands consist of two branches and do not belong to any known transitions of VO. A rotational analysis of these bands indicated that the bands at 21 050 and 22 042 cm À1 had a common upper state but the lower state constants for these two bands matched with the rotational constants of the v 00 = 1 and v 00 = 0 vibrational levels of the 1 2 D 3/2 state, while the band at 21 979 cm À1 had a lower Table 1 Observed line positions (in cm À1 ) for the new transition of VO [20,21]. This observation led us to conclude that the 21 050 and 22 042 cm À1 bands were in fact the 0-1 and 0-0 bands of the 2 D 3/2 -1 2 D 3/2 sub-band of a new electronic transition, and the 21 979 cm À1 band was the 0-0 band of the corresponding 2 D 5/2 -1 2 D 5/2 sub-band.…”

“…Among the doublet transitions of VO, there are two 2 P-2 D transitions near 7200 and 8126 cm À1 having a common 2 D lower state which will be referred in this paper as the 1 2 D state. Recently another near infrared transition, 2 U-1 2 D, has been identified near 5500 cm À1 having its lower state in common with the two doublet-doublet transitions mentioned above [21]. There is a fourth doublet transition, which has been assigned as 2 2 D-1 2 U, that does not have any state in common with the other doublet transitions [20].…”

“…The ground state of VO is well established as a 4 R À state from numerous theoretical [12,13] and experimental [14][15][16][17][18][19][20][21] studies. Three strong transitions of VO have been identified in the near infrared and visible regions which have been assigned as the A 4 P-X 4 R À [14], B 4 P-X 4 R À [15][16][17], and C 4 R À -X 4 R À [18,19] transitions, all involving the ground state as the lower state.…”

ExoMol line lists – XVIII. The high-temperature spectrum of VO

“…However, these observed transitions do not quite provide sufficient information to determine the energy of all spin rovibronic bands relative to the zero of the X 4 Σ − state. Specifically, there is a spectroscopic network connecting the {c 2 ∆ 5/2 , e 2 Φ 7/2 , f 2 Π 3/2 and g 2 Π 3/2 } states from the experiments reported by Merer et al (1987), Ram et al (2002) and Ram & Bernath (2005) via the observed g 2 Π 3/2 -X 4 Σ − transition. This network can be connected to the ground state of VO.…”

The spectrum of nickel monoxide between 410 and 510 nm: laser-induced fluorescence and dispersed fluorescence measurements

“…Because of their importance in many fields, from materials science to interstellar chemistry, 3d transition metal monoxides have been the subject of many experimental [1][2][3] and theoretical studies [4][5][6]. While the database for ground and excited electronic states is expanding it remains far from complete.…”