Femtosecond time-resolved dynamics of the electronically excited ethylene molecule

Autor:	V. Stert, W. Radloff, H.-H. Ritze, H. Lippert
Rok vydání:	2004
Předmět:	chemistry.chemical_compound Wavelength Ethylene chemistry Excited state Ionization Femtosecond General Physics and Astronomy Molecule Physical and Theoretical Chemistry Atomic physics Spectral line Ion
Zdroj:	Chemical Physics Letters. 388:144-149
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2004.02.077
Popis:	The ultrafast dynamics of the electronically excited ethylene molecule has been studied in pump–probe experiments with the pump wavelength of 198 nm and the probe wavelength of 790 nm. The lifetime measured for the initially excited ππ ∗ state is about 10 fs for C2H4 as well as for C2D4. No secondarily populated states of ethylene can be directly observed despite the high intensity of the probe pulses used. However, the observed time dependence of the fragment ions C2H3+ (C2D3+) and C2H2+ (C2D2+) suggests that they are formed by dissociative ionization via a secondary electronic state of ethylene. This result was confirmed by the time-resolved photoelectron spectra.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::af1b73589faef491a8b610cffe556a2e https://doi.org/10.1016/j.cplett.2004.02.077 Zobrazit plný text záznamu Full Text from ScienceDirect