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Electronic Ground and Excited State Spectroscopy of C6H and C6D

✍ Scribed by H. Linnartz; T. Motylewski; O. Vaizert; J.P. Maier; A.J. Apponi; M.C. McCarthy; C.A. Gottlieb; P. Thaddeus

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
226 KB
Volume
197
Category
Article
ISSN
0022-2852

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✦ Synopsis

Rotational transitions in the X 2 ⌸ ground state of C 6 H and C 6 D have been measured by Fourier transform microwave and millimeter-wave absorption spectroscopy. More than 150 rotational lines in the ground 2 ⌸ 3/2 and 2 ⌸ 1/2 ladders have been observed, allowing an accurate determination of the rotational, fine structure, lambda-doubling, and hyperfine coupling constants using a standard effective Hamiltonian for a molecule in an isolated 2 ⌸ electronic state. The molecular ground state constants are used to characterize the rotationally resolved origin band of the 2 ⌸ 4 X 2 ⌸ electronic transition observed by cavity ring-down laser absorption spectroscopy in a pulsed supersonic slit-jet discharge source. From these data, spectroscopic constants for the excited electronic state are determined.

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