CaOH and CaOD were studied in the gas phase using dye laser spectroscopy. The molecules were produced in a Broida-type oven. Laser excitation spectroscopy was used to study the Ḃ²Σ⁺-X²Σ⁺ transition of CaOD near 5500 Å. The 000-000 band was rotationally analyzed and r₀ structures were established for both states. Like other alkaline earth monohydroxides, CaOD is a linear molecule. For the Ḃ²Σ⁺ state the following bond lengths were found: r(Ca-O) = 1.9697Å and r(O-H) = 0.9179Å, while for the X²Σ⁺ state, r(Ca-O) = 1.9849 and r(O-H) = 0.9207Å. Optical-optical double resonance (OODR) was used to investigate the upper electronic states of CaOH. A ²Π electronic state and three ²Σ vibronic states were observed for the first time in the region 2990 - 3070 Å. For the ²Π state the rotational constant, B°, and the band origin energy, T₀, were calculated: B° = 0.347 cm⁻¹ and T = 32360 cm⁻¹.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/277856 |
| Date | January 1991 |
| Creators | Hailey, Rebecca Anne, 1965- |
| Contributors | Bernath, Peter F. |
| Publisher | The University of Arizona. |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Thesis-Reproduction (electronic) |
| Rights | Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. |
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