Fourier transform spectroscopy of the A3Π-X3Σ− transition of NH

ArF laser photodissociation of NH3 at 193 nm: internal energy distributions in NH2 X̃2B1 and Ã2A1, and two-photon generatin of NH A 3Π and b 1Σ+

Laser photoelectron spectrometry of CH

The polarization configuration interaction (POL–CI) wavefunction is described. Calculations are reported for the X 3Σ−, a 1Δ, b 1Σ+, A 3Π, and c 1Π states of the NH molecules in a double zeta plus polarization Gaussian basis. Calculated excitation energies and spectroscopic constants are compared with results from more extensive calculations in this basis and with previously reported calculations. The starting point for POL–CI calculations is a generalized valence bond (GVB) calculation to insure proper dissociation. Results of using both ground state and excited state GVB orbitals show that a single set of (ground state) orbitals may be used for all states without loss of accuracy. Dipole moments and electronic transition moments as a function of R are also given.

Polarization CI wavefunctions: the valence states of the NH radical

Previously unknown predissociations in the NH radical have been discovered via high resolution lifetime measurements using the high‐frequency deflection technique Measurements were made for individual rotational levels for v′=0 and v′=1 for the NH A 3Π and the c 1Π states The origin of the observed predissociation is indicated to be the 5Σ− level arising from the ground state asymptote These data allow a determination of the dissociation energy of the ground state and the singlet–triplet manifold separation Implications of these results for the astrophysical abundance of NH formed by radiative recombination processes are discussed

Lifetime studies of the NH molecule: New predissociations, the dissociation energy, and interstellar diatomic recombination

Direct determination of the NH b1Σ+ → X3Σ− energy difference

Light emission of the photofragments produced by photolysis of ammonia and ammonia-d3 at 147, 123.6 and 104.8 nm: first observation of the b 1Σ+ → X 3Σ− transition of NH and ND

C. Vermeil

Papers

Direct determination of the NH b1Σ+ → X3Σ− energy difference

Light emission of the photofragments produced by photolysis of ammonia and ammonia-d3 at 147, 123.6 and 104.8 nm: first observation of the b 1Σ+ → X 3Σ− transition of NH and ND

Light emission of the photofragments produced by photolysis of ammonia and ammonia-d3 at 147, 123.6 and 104.8 nm:

Photodissociation de l'ammoniac au-dessus de son potentiel d'ionisation—I formation de NH(b 1Σ+)