A Low-cost Chirped-pulse Fourier Transform Microwave Spectrometer For Undergraduate Physical Chemistry Lab

Carroll, Brandon

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https://hdl.handle.net/2142/51160 Copy

Description

Title

A Low-cost Chirped-pulse Fourier Transform Microwave Spectrometer For Undergraduate Physical Chemistry Lab

Author(s)

Carroll, Brandon

Contributor(s)

• Blake, Geoffrey
• Finneran, Ian

Issue Date

2014-06-19

Keyword(s)

Chirped pulse

Abstract

We present the design and construction of a simple and low-cost waveguide chirped pulse Fourier transform microwave (CP-FTMW) spectrometer suitable for gas-phase rotational spectroscopy experiments in undergraduate physical chemistry labs as well as graduate level research. The spectrometer operates with modest bandwidth, using phased locked loop (PLL) microwave sources and a direct digital synthesis (DDS) chirp source, making it an affordable for undergraduate labs. The performance of the instrument is benchmarked by acquiring the pure rotational spectrum of the J = 1 - 0 transition OCS and its isotopologues from 11-12.5 GHz.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/51160

DOI

https://doi.org/10.15278/isms.2014.RE01

Copyright and License Information

Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

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