Accurate absolute level energies of the B\,^1\Sigma^{+}_{u}, v=0β8,N and
EF\,^{1}\Sigma^{+}_{g}, v=0β21,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
EF1Ξ£g+ββX1Ξ£g+β (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 cmβ1 are
obtained for some low-lying E\,^{1}\Sigma^{+}_{g} inner-well rovibrational
levels, while uncertainties for higher-lying rovibrational levels and those of
the F\,^{1}\Sigma^{+}_{g} outer-well states are nominally 0.005 cmβ1.
Level energies of B\,^1\Sigma^{+}_{u} rovibrational levels, for vβ€8
and Nβ€10 are determined at an accuracy of 0.001 cmβ1. Computed
wavelengths of D2β Lyman transitions in the
B\,^1\Sigma^{+}_{u}-X\,^{1}\Sigma^{+}_{g} (v,0) bands are also tabulated
for future applications.Comment: appears in Journal of Molecular Spectroscopy (2014