ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
A˜ 1Au→X˜ 1Σg+ SEP spectra of acetylene near EVIB=7000 cm−1 show that Darling–Dennison resonance between the cis- and trans-bending vibrations is the first step in a series of anharmonic resonances which can transfer nearly all the vibrational energy out of the Franck–Condon bright states at higher energy. In addition to allowed ||ΔK||≡||K'−l‘||=1 rotational transitions, nominally forbidden ||ΔK||=0,2,3 rotational transitions have also been observed due to axis-switching and rotational-l-resonance. Although the range of detectable fluorescence dips is only about 30, the range of detectable SEP intensities in these spectra is probably about 500.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.463021
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