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Laser Spectroscopy of theÃ2Π–X2Σ+0–0 Band of the CaCCH Radical

✍ Scribed by Mingguang Li; John A. Coxon

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
215 KB
Volume
176
Category
Article
ISSN
0022-2852

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✦ Synopsis

The 0-0 band of the A ˜2P-X ˜2S / transition of CaCCH has been rotationally analyzed through CW dye laser excitation. A total of 440 rotational lines of this band were recorded with high precision, 0.0035 cm 01 . A least-squares fit of the line positions using a standard 2 P-2 S / model provides accurate molecular constants for both electronic states and confirms a linear equilibrium geometry of CaCCH. From the L-type doubling constant p £ determined in this work, the B ˜2S / electronic state is predicted to lie É1080 cm 01 above the A ˜2P state.

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