E.J. Salumbides, D. Bailly, M. Vervloet, W. Ubachs
Accurate absolute level energies of the B1Σu+, v = 0-8, N and EF1Σg+, v = 0-21, N rovibrational quantum states of molecular deuterium are derived by combining results from a Doppler-free two-photon laser excitation study on several lines in the EF1Σg+-X1Σg+ (0, 0) band, with results from a Fourier-transform spectroscopic emission study on a low-pressure hydrogen discharge. Level energy uncertainties as low as 0.0005 cm-1 are obtained for some low-lying E1Σg+ inner-well rovibrational levels, while uncertainties for higher-lying rovibrational levels and those of the F1Σg+ outer-well states are nominally 0.005 cm-1. Level energies of B1Σu+ rovibrational levels, for v≤8 and N≤10 are determined at an accuracy of 0.001 cm-1. Computed wavelengths of D2 Lyman transitions in the B1Σu+-X1Σg+ (v,0) bands are also tabulated for future applications. © 2014 Elsevier Inc. All rights reserved.
Department of Physics and Astronomy, LaserLaB, VU University, de Boelelaan 1081, Amsterdam, 1081HV, Netherlands; Department of Physics, University of San Carlos, Cebu City, 6000, Philippines; Laboratoire Photophysique Moléculaire, Université de Paris-Sud, Orsay, France; Synchrotron Soleil, Lorme des Merisiers, Saint-Aubin BP 48, Gif-sur-Yvette, 91192, France
