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High-Resolution Spectroscopy of TaS in the Visible and Near-Infrared Regions

✍ Scribed by S. Wallin; G. Edvinsson; A.G. Taklif

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 281 KB
Volume: 192
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1998.7716

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✦ Synopsis

The spectrum of TaS between 4000 and 20 000 cm Ϫ1 has been recorded in emission from a microwave discharge with a resolution between 0.011 and 0.025 cm Ϫ1 . Seventeen electronic transitions have been rotationally analyzed. Fifteen of these have the ground state, 2 ⌬, as the lower state and two of them are transitions between excited states. The ground state has been fitted to a Hund's case (a) Hamiltonian. Effective molecular constants have been determined for the excited states, which are mainly described as Hund's case (c). Perturbations that have been found in the excited states are discussed. Transitions between states that are connected neither to the ground state nor to any of the other 14 electronic states of this work have been found. No analysis is presented for these transitions, but some of their characteristic features are described.

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