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Title:MULTI-ANTENNAE DETECTION IN A CP-FTMW SPECTROMETER
Author(s):Marshall, Frank E
Contributor(s):Grubbs II, G. S.; Donnell, Kristen ; Moon, Nicole ; Duerden, Amanda Jo
Subject(s):Instrument/Technique Demonstration
Abstract:Recent experiments in the Grubbs research group at the Missouri University of Science and Technology have shown that it is possible to detect rotational spectra of molecules in a CP-FTMW using multiple horn antennae. This allows for increased sensitivity by sampling a free induction decay twice, each at a separate point. Utilizing the traditional CP-FTMW design of two horns – one for transmitting and one for receiving – it was shown that it is possible to use the transmitting horn to also receive spectra. This is achieved by adding a circulator, switch, and low noise amplifier in the circuit between the transmitting horn and power amplifier. This has been demonstrated on OCS, 1,3-Difluorobenzene, and Chloroacetone in the 6-18 GHz region of the electromagnetic spectrum utilizing a variety of experimental setups. Results of these experiments as well as issues with implementing this setup, such as FID phasing issues and data analysis, will be discussed. \begin{wrapfigure}{R} {0pt} \hspace{1.5in} \includegraphics[scale=0.6] {circulatordiagram.eps} \end{wrapfigure}
Issue Date:2019-06-19
Publisher:International Symposium on Molecular Spectroscopy
Genre:Conference Paper / Presentation
Type:Text
Language:English
URI:http://hdl.handle.net/2142/104473
DOI:10.15278/isms.2019.WC05
Rights Information:Copyright 2019 Frank E Marshall
Date Available in IDEALS:2019-07-15
2020-01-25


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