The hybrid rotational components in the 000 origin band of the A˜A‘(S1)←X˜A'(S0) transition in acetaldehyde
Liu, H. ; Lim, E. C. ; Judge, R. H. ; Moule, D. C.
College Park, Md. : American Institute of Physics (AIP)
Published 1995
College Park, Md. : American Institute of Physics (AIP)
Published 1995
| ISSN: |
1089-7690
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
Chemistry and Pharmacology
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| Notes: |
The 000 origin band of the S1←S0, electronic transition that results from n→π* electron promotion has been observed under molecular beam conditions with a pulse amplified ring laser. At low temperatures, ∼0.7 K, the spectrum consisted of 11 lines that originated from Ka‘=0 and J‘=0 or 1 rotational levels. A rotational analysis revealed that the transition between the a1–a1 torsional levels gives rise to a c-type band, whereas the e–e levels are connected by a hybrid transition that has components along the a, b, and c principal axes. The fluorescence emission from the e levels was greatly reduced at temperatures above 3 K. The interpretation of this photophysical effect requires an intermolecular collision within the molecular beam that quenches the fluorescence from the S1 state. © 1995 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |