Identification of Trace 2-Chloropropene with a New Chirped Pulse Microwave Spectrometer

• Authors: Z. Kisiel , J. Kosarzewski
• Languages of publication: EN

Abstracts

EN

The design of a new chirped pulse, Fourier-transform microwave spectrometer for recording broadband rotational spectra of supersonic expansion samples is described. The spectrometer can record spectral windows of width of up to 2.2 GHz over the 2-18 GHz frequency region. It is complemented by a new FFT program with several novel features. Tests of the spectrometer revealed the presence of an initially unknown volatile trace molecule in a sample of 2,2-dichloropropane (DCP). The broadband nature of the new spectrometer allowed rapid assignment of the new species as 2-chloropropene, CH₃CCl=CH₂ (2CP). Additional mm wave measurements combined with analysis of previous DCP spectra up to 311 GHz allow us to report the hitherto most precise spectroscopic constants for 2CP.

Keywords

EN

chirped pulse; Fourier transform microwave; supersonic expansion; millimetre wave; rotational spectroscopy

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 2
• Pages: 311-317

Dates

published

2017-02

received

2017-02-13

Contributors

author

Z. Kisiel

• Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland

author

J. Kosarzewski

• Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland

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Identifiers

DOI

10.12693/APhysPolA.131.311