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Stark field induced perturbations in the ν1 + 3ν3 vibrational overtone band of acetylene

✍ Scribed by J.A. Barnes; T.E. Gough; M. Stoer

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
416 KB
Volume
237
Category
Article
ISSN
0009-2614

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✦ Synopsis

The rotationally resolved, Stark split spectrum of the u~ + 3p 3 band of acetylene has been investigated with a high resolution molecular beam laser spectrometer. The results indicate a field induced coupling of the 11030°0 °) upper state with the 1004000 °) state. The number of observed transitions was sufficient to allow a detailed analysis of the field induced coupling. The J-dependent polarisability and anisotropy of the polarisability of the 1103000 °) state were measured as well as the anisotropy of the polarisability of the ground state (1.071 ,~3). The coupling strength to the 10040°0 °) state, and the origin of the 4u 3 band were determined to be 0.0696 D and 12671.50 cm-~. The latter has been compared with predictions made by local mode theory.

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