B 1 Σ + u and EF 1 Σ + g level energies of D 2
نویسندگان
چکیده
Accurate absolute level energies of the B Σu , v = 0− 8, N and EF Σg , 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 EF Σg −X Σg (0,0) band, with results from a Fourier-transform spectroscopic emission study on a low-pressure hydrogen discharge. Level energy uncertainties as low as 0.000 5 cm−1 are obtained for some low-lying E Σg inner-well rovibrational levels, while uncertainties for higher-lying rovibrational levels and those of the F Σg outer-well states are nominally 0.005 cm−1. Level energies of B Σu 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 B Σu −X Σg (v, 0) bands are also tabulated for future applications.
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