Weak isotope effect in the condensed phase vibrational relaxation of a nonhydride molecule: NO(a 4Π)
- 1 September 1978
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 69 (5) , 1853-1857
- https://doi.org/10.1063/1.436846
Abstract
The 1933 Å ArF excimer laser has been used to directly time resolve the vibrational relaxation of 14N16O, 15N16O, and 14N18O into the v=0 B 2Π1/2 and v=0 a 4Π5/2 states in solid Ar host. A weak ’’conventional’’ istope effect is observed, with the smaller vibrational quanta tending to relax faster. However, the rates do not strictly correlate with either the isotopic reduced mass or the asymmetry of vibration. The host lattice phonons may directly accept energy during these relaxation processes. Intersystem crossing between v=0 B 2Π and v=8 a 4Π is shown to involve the individual spin orbit components of a 4Π.Keywords
This publication has 14 references indexed in Scilit:
- Photolysis of NO trapped in a rigid matrix at 6 KThe Journal of Chemical Physics, 1978
- Observation of the a4Π and b4Σ− states of NO by electron-impact spectroscopyJournal of Molecular Spectroscopy, 1978
- Local mode involvement in the vibrational relaxation of isolated (O2)2 dimersThe Journal of Chemical Physics, 1977
- Rydberg states in condensed phases: Evidence for small ’’bubble’’ formation around NO 3sσ (A 2Σ+) in solid rare gasesThe Journal of Chemical Physics, 1977
- Long range vibrational energy transfer from ND and NH(A 3Π) to CO and N2 in solid ArThe Journal of Chemical Physics, 1976
- High resolution spectroscopy of the electronic excitation of NO trapped in rare gas matricesJournal of Molecular Spectroscopy, 1975
- The β and γ bands of nitric oxide observed during the flash photolysis of nitrosyl chlorideJournal of Molecular Spectroscopy, 1971
- Spectroscopic Evidence for Slow Vibrational and Electronic Relaxation in Solids. The Vegard–Kaplan and Second Positive Systems of N2 in Solid Rare GasesThe Journal of Chemical Physics, 1968
- Emission Spectrum of NO in Solid Rare Gases: The Lifetime of the a 4Π State and the Spectrum of the a 4Π→X 2Π and B 2Π→X 2Π TransitionsThe Journal of Chemical Physics, 1964
- Emission Spectra of N2, O2, and NO Molecules Trapped in Solid MatricesThe Journal of Chemical Physics, 1960