R. Hakalla, M.L. Niu, R.W. Field, E.J. Salumbides, A.N. Heays, G. Stark, J.R. Lyons, M. Eidelsberg, J.L. Lemaire, S.R. Federman, M. Zachwieja, W. Szajna, P. Kolek, I. Piotrowska, M. Ostrowska-Kopeć, R. Kepa, N. De Oliveira, W. Ubachs
High-accuracy dispersive optical spectroscopy measurements in the visible (VIS) region have been performed on the less-abundant 12C17O isotopologue, observing high-resolution emission bands of the B1Σ+ (ν = 0) → A1Π (ν = 3, 4, and 5) Ångström system. These are combined with high-resolution photoabsorption measurements of the 12C17O B1Σ+ (ν = 0) ← X1Σ+ (ν = 0) and C1Σ+ (ν = 0) ← X1Σ+ (ν = 0) Hopfield-Birge bands recorded with the vacuum-ultraviolet (VUV) Fourier transform spectrometer, installed on the DESIRS beamline at the SOLEIL synchrotron. The frequencies of 429 observed transitions have been determined in the 15 100-18 400 cm-1 and 86 900-92 100 cm-1 regions with an absolute accuracy of up to 0.003 cm-1 and 0.005 cm-1 for the B-A, and B-X, C-X systems, respectively. These new experimental data were combined with data from the previously analysed C → A and B → A systems. The comprehensive data set, 982 spectral lines belonging to 12 bands, was included in a deperturbation analysis of the A1Π, ν = 1-5 levels of 12C17O, taking into account interactions with levels in the d3Δi, e3Σ-, a′3Σ+, I1Σ- and D1Δ states. The A1Π and perturber states were described in terms of a set of deperturbed molecular constants, spin-orbit and L-uncoupling interaction parameters, equilibrium constants, 309 term values, as well as isotopologue-independent spin-orbit and rotation-electronic perturbation parameters. © The Royal Society of Chemistry 2016.
Materials Spectroscopy Laboratory, Department of Experimental Physics, Faculty of Mathematics and Natural Science, University of Rzeszów, ul. Prof. S. Pigonia 1, Rzeszów, 35-959, Poland; Department of Physics and Astronomy, LaserLaB, Vrije Universiteit, De Boelelaan 1081, Amsterdam, 1081 HV, Netherlands; Department of Chemistry, Massachusetts Institute of Technology, Cambridge, 02139, MA, United States; Department of Physics, University of San Carlos, Cebu City, 6000, Philippines; Leiden Observatory, Leiden University, PO Box 9513, Leiden, 2300 RA, Netherlands; Department of Physics, Wellesley College, Wellesley, 02481, MA, United States; School of Earth and Space Exploration, Arizona State University, PO Box 871404, Tempe, 85287, AZ, United States; Observatoire de Paris, LERMA, UMR 8112 du CNRS, Meudon, 92195, France; Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS-Université Paris-Sud, UMR 8214, Orsay, 1405, France; Department of Physics and Astronomy, University of Toledo, Toledo, 43606, OH, United States; Synchrotron SOLEIL, Orme de Merisiers, St. Aubin, BP 48, Gif sur Yvette Cedex, F-91192, France
