Optic-ncoustic mcasurcmcnts on Ilid prcssurc bcnrcnc BIG prcscnted, and arc used to malyge the nature of the decay channck form the hip,l~ly vlbrationally excited jB 1u state. The vlbr.ltionally rclxxed bcwcnc 3131u state is deactlvatcd by n-pcntnne with a colliGona1 cfficicncy of 3 X 10 OS. A model
Intensity-dependent laser ionization experiments involving the 1b1u state of benzene
โ Scribed by Ellen Sekreta; Kevin G. Owens; James P. Reilly
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 503 KB
- Volume
- 132
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
โฆ Synopsis
Benzene is two-step photoionized with ArF laser radiation and the resulting mass-and photoelectron spectra obtained versus laser intensity. In agreement with previous work, benzene ionizes very inefficiently at this wavelength. Attempts to probe the rapid non-radiative relaxation of its 'B it, excited state by monitoring the intensity dependence of the photoelectron spectrum are impeded by ionization of neutral atomic carbon fragments.
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Many but not al! bands of the 2600 A absorption system of benzene involving vibrational levels m&e than 3000 cm-l above the zerepoint level of the ,excited state are seen to be more or less diffuse when photographed under very high resolution This threshold lies almost exactly at the hkhest level ab
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