Files in this item
|(no description provided)|
|Title:||Photoassociative excitation spectroscopy of excimer molecules|
|Author(s):||Jones, Ronald Blake|
|Doctoral Committee Chair(s):||Eden, James G.|
|Department / Program:||Electrical and Computer Engineering|
|Discipline:||Electrical and Computer Engineering|
|Degree Granting Institution:||University of Illinois at Urbana-Champaign|
|Abstract:||Laser excitation spectroscopy of transitions having dissociative ground states was explored as a tool for the study of excimer molecules. Since the repulsive nature of the ground state constrains collision pairs to large internuclear transitions, bound $\gets$ free excitation spectra contain more structure than the bound $\to$ free fluorescence spectra for the same molecules, therefore containing more information about the potential surfaces. Unique properties of the photoassociative excitation spectroscopy technique are described which allow the dependence of the dipole transition moment on the internuclear separation ($\mu$(R)) to be extracted in a very direct manner.
Excitation spectra are presented for the B $\gets$ X transitions of KrF and XeI for the wavelength ($\lambda$) interval 206 nm $<$ $\lambda$ $<$ 255 nm. The excitation spectra are analyzed using an iterative trial and error comparison with calculated spectra. The effect of the rotational potential is examined. Potential surfaces and the $\mu$(R) results are given for both molecules.
The possible use of the technique is then discussed for excimer molecules having predissociative upper states. Some preliminary results for KrI are given. This work required the development of a tunable VUV source, which is described.
|Rights Information:||Copyright 1992 Jones, Ronald Blake|
|Date Available in IDEALS:||2011-05-07|
|Identifier in Online Catalog:||AAI9236493|
This item appears in the following Collection(s)
Dissertations and Theses - Electrical and Computer Engineering
Dissertations and Theses in Electrical and Computer Engineering
Graduate Dissertations and Theses at Illinois
Graduate Theses and Dissertations at Illinois