Thesis (Ph.D) - University of Birmingham, School of Chemistry, Faculty of Science.
Vibrational overtone excitation of single rovibrational eigenstates in acetylene, followed by state‐resolved, laser‐induced fluorescence (LIF) interrogation of the collisionally populated quantum states, permits a direct determination of both the pathways and rates of state‐to‐state rotational energy transfer in a polyatomic molecule containing about 10 cm −1 of internal by: V—V energy transfer from a large molecule excited to vibrational energies of chemical interest has been demonstrated by detection of ≈ % yield of CO2() due to energy transfer from. Erratum: “Direct determination of state-to-state rotational energy transfer rate constants via a Raman–Raman double resonance technique: ortho-acetylene in v2 = 1 at K” [J. Chem. Phys. B. J. Orr, in Vibrational Energy Transfer Involving Large and Small Molecules, edited by J. R. Barker, Advances in Chemical Kinetics and Dynamics, Vol. 2 (JAI, in press, ). Google Scholar; Our notation is common to many of the preceding by:
The use of energy transfer data and models in describing nonequilibrium polyatomic reaction systems is discussed with particular emphasis on the information needed for modeling vibrational energy transfer. In the discussion, it is pointed out that key areas of energy transfer knowledge are still lacking and the available experimental data are limited in scope and are of uneven by: 1. Introduction. Acetylene (HC CH) is one of the most favorite molecules of both the theoretician and spectroscopist, as a prototype for the development of experimental and theoretical techniques in molecular physics, and for the investigation of intramolecular vibrational dynamics of tetra-atomic the past decades, acetylene has been extensively studied, especially at the energies Cited by: 8. Vibrational and Rotational Transitions of Polyatomic Molecules; Acetylene. Vibrational levels and wavefunctions. Acetylene is known to be a symmetric linear molecule with D oo h point group symmetry and 3N - 5 = 7 vibrational normal modes, as depicted in Table 1. Symmetry is found to be an invaluable aid in understanding the motions in. Quasiclassical trajectory study of collisional energy transfer in toluene systems. I. Argon bath gas: energy dependence and isotope effects Lim, Kieran F. , Quasiclassical trajectory study of collisional energy transfer in toluene systems. by:
Shown below is a "research-grade" spectrum of the C 2 H 2 spectrum you will record. It was recorded in at Dartmouth by Dr. Brian C. Smith as part of his Ph.D. thesis research with Prof. Winn. Brian used a very high resolution FTIR in Prof. Winn's lab to study the acetylene spectrum throughout the IR and on into the visible where very weak overtone transitions can be seen. Probing Vibrational Relaxation with Stimulated Emission Pumping Spectroscopy (S H Kable et al.) Stimulated Emission Pumping as a Probe of the OH(X 2 II) + Ar Intermolecular Potential Energy Surface (M L Lester et al.) Theoretical Methods for Extracting Vibrational Dynamics: Spectroscopy and Dynamics in the Wings (E J Heller). D. Jacquemart et al./Journal of Quantitative Spectroscopy & Radiative Transfer 82 () – Table 1 List of the acetylene bands present in HITRANa Band v v Center min max Smin Smax # lines S J max 12C 2H2 (14+ 05)+– + b E−26 E−20 E−19 50 2 10 5– 5 + b E−27 E−20 E−19 Unfortunately, most laboratory collisional energy transfer studies are performed at room temperature. 1,2 At SRI, we are in the midst of a laboratory program to measure collisional removal rate constants for the important atmospheric colliders at the temperature of the emitting O 2 layer.