Exciton line shapes and migration with stochastic exciton lattice coupling
In a recent article, Sumi [J. Chem. Phys. 67, 2943 (1977)] has discussed the optical line shape of an exciton interacting with phonons using a Gaussian Markov process for this interaction. By assuming...
In a recent article, Sumi [J. Chem. Phys. 67, 2943 (1977)] has discussed the optical line shape of an exciton interacting with phonons using a Gaussian Markov process for this interaction. By assuming...
Bifurcation analysis of nonlinear reaction–diffusion systems: Dissipative structures in a sphere
The steady state spatial patterns arising in open nonlinear reaction–diffusion systems beyond an instability point of the thermodynamic branch are studied for a simple kinetic scheme derived fro...
The steady state spatial patterns arising in open nonlinear reaction–diffusion systems beyond an instability point of the thermodynamic branch are studied for a simple kinetic scheme derived fro...
Radiative and radiationless vibronic deactivation rates in selectively excited CO+
J. Chem. Phys. 69, 3597 (1978); doi:10.1063/1.437066
Issue Date: 15 October 1978
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A tunable dye laser has been used to selectively excite particular (v=0–3) vibrational levels of A 2
CO+. The CO+ is produced in a He bath by Penning ionization of CO by He metastables. By studying the time resolved emission of CO+ from selected vibrational levels as a function of He pressure, values have been obtained for the radiative decay rates and the velocity averaged cross-sections for CO+ vibrational relaxation upon He collision. The cross sections are all rather large (
0.1 Å2) and increase considerably with increasing v. Time resolved spectra of the vibrationally relaxed emission require the postulation of a three-level system to fit their form. It is proposed that both of these effects are consistent with a vibrational relaxation mechanism wherein the A 2 CO+ vibrational levels relax via intermediate, highly excited, vibrational levels of the ground X 2
state of CO+.
The Journal of Chemical Physics is copyrighted by The American Institute of Physics.
CO+. The CO+ is produced in a He bath by Penning ionization of CO by He metastables. By studying the time resolved emission of CO+ from selected vibrational levels as a function of He pressure, values have been obtained for the radiative decay rates and the velocity averaged cross-sections for CO+ vibrational relaxation upon He collision. The cross sections are all rather large (0.1 Å2) and increase considerably with increasing v. Time resolved spectra of the vibrationally relaxed emission require the postulation of a three-level system to fit their form. It is proposed that both of these effects are consistent with a vibrational relaxation mechanism wherein the A 2 CO+ vibrational levels relax via intermediate, highly excited, vibrational levels of the ground X 2 state of CO+.
The Journal of Chemical Physics is copyrighted by The American Institute of Physics.
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