Non-radiative decay processes in isolated SO2 molecules excited within the first allowed absorption band (2500–3200 Å)
✍ Scribed by Jack G. Calvert
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 493 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
New and previously published SO2 fluorescence emission data rel;itcd to non-radiative decay processes arc considered in tight of the recent observations of Brus and McDonald. All the present data are consistent with the previous conclusion of hfettee that non-radiative proccsscs in SO-, singlet photochemistry are unimportant. It appears that any small inefficiency in the emission of light quanta for '302 excited at short wavelengths (2650 A) is largely due to the population of a second very short-lived state which is quenched effectively even at pressures down to 1 u. The very low efficiency of quanta production which we observed at long wavelengths (3020 A) appears to have its origin not only in the second easily quznchcd state, but more importantly, in the diffusion4 loss sf the long-lived sin@t which for these conditions has a 20.fold greater lifetime than was expected previously.