METHODS DEVELOPMENT FOR SPECTRAL SIMPLIFICATION OF ROOM-TEMPERATURE ROTATIONAL SPECTRA

Date of Award

2014

Document Type

Thesis

Degree Name

Bachelors

Department

Natural Sciences

First Advisor

Shipman, Steven

Keywords

Microwave Spectrometry, Medvedev, Y. V., De Lucia, Frank

Area of Concentration

Chemistry

Abstract

Room-temperature rotational spectra are dense and difficult to assign. In this thesis, two different methods were developed with a waveguide-based spectrometer that operates from 8.7 to 26.5 GHz. The first method, based on previous work by Medvedev and De Lucia, was used to estimate lower state energies of transitions by performing relative intensity measurements at a range of temperatures between -20 and +50C. The second method employed microwave-microwave double resonance measurements to determine level connectivity between rotational transitions. The relative intensity measurements were not particularly successful in this frequency, but the information gleaned from the double resonance measurements can be incorporated into other spectral search algorithms via penalty functions to simplify the spectral assignment process.

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