The rotationally resolved S,+T, transition of jet-cooled pyrazine has been studied using phosphorescence excitation and multiphoton ionization spectroscopy. A computer simulation that divides the relative transition intensity by 2J+ 1 successfully reproduces the experimental spectra. The results are
Effects of limited CI on T1 → S0 oscillator strength and phosphorescence lifetime of pyrazine
✍ Scribed by William Roy Hall
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 318 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
Using modified CNDO/S/CI wavefunctions, the effects of 10, 20, 30 and no CI on the oscillator strength of the TI -c So transition and phosphorescence Lifetim= of pyrazine was investigated. From these caiculations, it was determined that although the individuaI numbers vzried, the order of magnitude remained fairly constant, appro.ximately IO-* s. The closest results to the experimental values for oscillator strength and phosphorescence Iifetime wins obtained with 20 an? 30 CI
📜 SIMILAR VOLUMES
Correlation effects are shown to change generalized oscillator strengths and inelr&c form factors by large factors a5 large as 10, from the Hartree-Fock values. The effects are fully included in the charge wavefunctions of the non-closed shell mny-electron theory by Sirmna~u. We calculate ihe charge
Radiative lifetimes of the lowest triplet states are determined for several aromatic hydrocarbons from the measured fluorescence quantum yield, phosphorescence quantum yield, and lifetime of phosphorescence. It is found that the radiative lifetime is considerably Iorger for pcrdeuterated naphthalen
Lighting of short tunnels effects of exit luminance on the lighting level. (In Japanese.