Vibration-rotation analysis of the jet-cooled v12, v7 + v8 and v6 + v10 absorption bands of 12C2H4
A Fourier transform interferometer was used to record the slit-jet cooled absorption spectrum of 12 C 2 H 4 between 700 and 2400 cm −1 I, at a spectral resolution of 0.005 cm −1 . Three bands, v 12 at 1442.442 70(1)cm −1 , v 7 + v 8 at 1888.978 23(3)cm −1 and v 6 + v 10 at 2047.775832(2)cm −1 , were...
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| Published in | Molecular physics Vol. 99; no. 5; pp. 455 - 461 |
|---|---|
| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Taylor & Francis Group
10.03.2001
|
| Online Access | Get full text |
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| Summary: | A Fourier transform interferometer was used to record the slit-jet cooled absorption spectrum of
12
C
2
H
4
between 700 and 2400 cm
−1
I, at a spectral resolution of 0.005 cm
−1
. Three bands, v
12
at 1442.442 70(1)cm
−1
, v
7
+ v
8
at 1888.978 23(3)cm
−1
and v
6
+ v
10
at 2047.775832(2)cm
−1
, were rotationally analysed. In the case of 7
1
8
1
, a known Coriolis perturbation mechanism involving the nearby 4
1
8
1
(1958.264cm
−1
) and 8
1
10
1
(1766.391 cm
−1
) states was accounted for in the analysis. The latter fitting procedure included 12 levels from the 4
1
8
1
state which are observed because lines from v
4
+ v
8
borrow intensity from v
7
+ v
8
. Compared to the literature, significantly improved vibration-rotation constants were obtained for all upper states reported in the present study. |
|---|---|
| ISSN: | 0026-8976 1362-3028 |
| DOI: | 10.1080/00268970010017018 |