Fourier transform emission spectroscopy of ScH and ScD: The new singlet electronic states A(1)Delta, D-1 Pi, E-1 Delta, and F-1 Sigma(-)

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The emission spectra of ScH and ScD have been investigated in the near infrared and visible using a Fourier transform spectrometer. The molecules were excited in a scandium hollow cathode lamp operated with neon gas and a trace of hydrogen or deuterium. Apart from the X-1 Sigma(+), B-1 Pi, C-1 Sigma(+), and G(1) Pi states reported previously [R. S. Ram and P. F. Bernath, J. Chem. Phys. 105, 2668-2674 (1996)], four additional new singlet electronic states A(1) Delta, D-1 Pi, E-1 Delta, and F-1 Sigma(-) have been identified below 21 000 cm(-1). The rotational analysis of several vibrational bands of the D-1 Pi-X-1 Sigma(+), D-1 Pi-A(1) Delta, E-1 Delta-B-1 Pi, E-1 Delta-A(1) Delta, and F-1 Sigma-B-1 Pi transitions has been carried out and spectroscopic consiants have been determined. The E-1 Delta state of ScH was not located because of the very weak intensity of the E-1 Delta-B-1 Pi and E-1 Delta-A(1) Delta transitions. (C) 1997 Academic Press.

Original languageEnglish
Pages (from-to)263-272
Number of pages10
Issue number2
Publication statusPublished - Jun 1997


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