Time resolved study of the Fermi component Ω−(Ag) in solid CO2 at T≂5 K
- 1 August 1986
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 85 (3) , 1295-1298
- https://doi.org/10.1063/1.451268
Abstract
We have investigated the vibrational coherence relaxation for the long‐living Ω−(Ag) hybrid bound state of the Fermi diad ω1:2ω2 in natural crystalline CO2 at T≂5 K by means of time resolved nanosecond CARS spectroscopy. The decay profile was found to be slower than exponential and fitting reasonably well to an exp{−(t/τ)1/2} time dependence with τ=2.3±0.2 ns. Our results are discussed in terms of weak diagonal structural disorder upon the vibrational relaxation of exciton states located near the band edges.Keywords
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