A THEORETICAL INVESTIGATION OF THE ORIGINS OF THE GREEN AND RED SPECTRA OF $Ca_{2}$

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1982

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Ohio State University

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The assignments of the emission spectra of Ca2 in the red and in the green has been the subject of discussion recently at this Symposium (1) and in the literature (2,3). A definitive set of assignments has not yet been agreed upon. We have calculated the potential energy curves and transition moments of the ground 1Σg+ and 1,21Σ1u states of Ca2 using a first order CI approach. These calculations support the assignment of the observed red and green emission spectra of Ca2 to transitions between the ground state and the 1,21Σ+u states, respectively. Prediassociation of the 11Σ+u state by the 13πu state is shown the be possible.

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  1. J.C. Wyaa, paper RE13 34th Symposium on Molecular Spectroscopy, Columbus, Ohio (June 1979). 2. W.J. Balfour and R.F. Whitlock, Can. J. Phys. 53, 472 (1975). 3. J.C. Miller and L. Andrews, Appl. Spectrose. Rev. 16, 1 (1980), and references therein.

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