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High-resolution infrared photodissociation spectra of C2H4 dimers

✍ Scribed by U. Buck; Ch. Lauenstein; A. Rudolph; B. Heijmen; S. Stolte; J. Reuss

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 423 KB
Volume: 144
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(88)87136-7

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✦ Synopsis

Vibrational predissociation spectra of C2H4 dimers have been measured near the Y, absorption band of the monomer by combining high-resolution waveguide lasers with a bandwidth of 1 MHz and a tuning range of 230 MHz around the lasing transitions and the scattering analysis of cluster beams. The dimers are labelled either by the scattering process itself or the measured fragmentation pattern obtained by electron bombardment ionisation. The results show that both the narrow fine structure and the broad background are due to dimers, confirming two different time scales of the dimer predissociation rates of 45 ns and 0.5 ps.

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