State‐to‐state relaxation processes for XeCl(B,C)
| Autor: | D. W. Setser, T. D. Dreiling |
|---|---|
| Rok vydání: | 1981 |
| Předmět: | |
| Zdroj: | The Journal of Chemical Physics. 75:4360-4378 |
| ISSN: | 1089-7690 0021-9606 |
| DOI: | 10.1063/1.442599 |
| Popis: | The XeCl (B–X) and (C–A) emission spectra obtained from reaction of Xe (3P2 or 3P1) with Cl2, CCl4, and COCl2 in the presence of He, Ne, Ar, Kr, and N2 bath gases were used to study the vibrational relaxation and transfer between the B and C states of XeCl. By using the different Cl donors, different ranges of vibrational energy were emphasized. The bound–free emission spectra were simulated for various pressures of bath gas to obtain vibrational distributions. Numerical modeling of the XeCl(B) and XeCl(C) vibrational populations and the B/C intensity ratio as a function of pressure gave rate constants for vibrational relaxation and transfer, as well as the model for the state‐to‐state processes. For Ar as the bath gas, vibrational relaxation can be characterized by an exponential gap model Pij ∝ e−0.1ΔE/kT, with rate constants of (1–6), (6–12), and (20–30) × 10−11 cm3 molecule−1 sec−1 for the v ranges of 0–30, 30–70, and 70–130, respectively. The rate constants for electronic state transfer are (3–11), (... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|