An investigation of the SO(X³Σ^-) molecule by multiphoton ionization spectroscopy

Abstract

Rydberg states of the SO molecule, in the region 62 500-67 500cm -1 above the neutral ground state, have been studied using both (3 + 1) and (2 + 1) resonance enhanced multiphoton ionization (MPI) spectroscopy. Band assignment has been assisted by recording spectra with both linearly and circularly polarized radiation, by simulation of rotational band contours and by calculating quantum defects for the observed Rydberg states.Transitions to four Rydberg states (the 3A(4pn), 3I'I(3dc5), 3I-I(3do') and 3q~(3d6) states) have been observed corresponding to promotion of an electron from the outermost occupied n molecular orbital in SO(X3E -) to the 4pn, 3d6 and 3da Rydberg orbitals. For each state, spectroscopic constants have been derived from the experimental spectra. A (2 + 2) MPI spectrum of a known valence state, the B3y~ -, v' = 8 state, has also been obtained.

Photoabsorption and photodissociation studies of dimethyl sulphoxide (DMSO) in the 35,000–80,000 cm−1 region using synchrotron radiation

“…Indeed, detailed analysis of the peaks shows that a large number of spectral features match very well with the absorption bands of the SO radical reported in earlier literature [31][32][33][34] The absorption spectrum of SO obtained in the photodissociation of DMSO-h 6 and DMSO-d 6 recorded on the HRVUV beamline in the region 48,000-52,000 cm À 1 is shown in Fig. 2.…”

Resonance enhanced multiphoton ionization spectroscopy of the NF molecule: 1,3Φ 3d and 4d Rydberg states

“…[1][2][3] As in our earlier work, 1 NF was produced on the inlet line of the spectrometer by making use of the rapid gas-phase reactions:…”