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Optical spectra of calcium atoms in inert matrices

1978; Elsevier BV; Volume: 70; Issue: 1 Linguagem: Inglês

10.1016/0022-2852(78)90007-3

1096-083X

Lester Andrews, W. W. Duley, Leo Brewer,

Mass Spectrometry Techniques and Applications

Calcium atoms codeposited with N2, Ar, Kr, and Xe on a sapphire plate at 10, 17, or 29 K exhibited very strong, sharp absorptions due to the resonance transition of isolated Ca atoms and broad bands in the green region which show Ca concentration dependence characteristic of aggregated species. A red absorption contained sharp vibronic fine structure with 117 cm−1 spacings in solid krypton which decreased to 111 cm−1 with 44Ca deposition. The structured absorption is assigned to the A1Σu+(1S + 1P) ← X1Σg+(1S + 1S) transition of Ca2.