Universität zu Köln

Zingsheim, Oliver, Bonah, Luis ORCID: 0000-0001-5686-7883, Lewen, Frank ORCID: 0000-0003-4555-2303, Thorwirth, Sven ORCID: 0000-0001-8200-6710, Mueller, Holger S. P. and Schlemmer, Stephan ORCID: 0000-0002-1421-7281 (2021). Millimeter-millimeter-wave double-modulation double-resonance spectroscopy. J. Mol. Spectrosc., 381. SAN DIEGO: ACADEMIC PRESS INC ELSEVIER SCIENCE. ISSN 1096-083X

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Abstract

A new millimeter-to millimeter-wave double-modulation double-resonance (MMW-MMW DM-DR) scheme has been applied to record spectra of two astronomically relevant complex organic molecules (COMs), propanal (C2H5CHO) and ethyl cyanide (C2H5CN), to demonstrate advantages of the DM-DR experimental technique. The DR technique helps to identify target transitions in a forest of lines and the implementation of a DM procedure (modulation of the pump and probe source) allows for confusion-and baseline-free spectra containing only the line(s) of interest. In particular the unambiguous assignment of weak and blended transitions in very dense MMW spectra is highlighted. Details of the observed Autler-Townes line splitting and possible future applications, such as automated analyses and adaptions of DM-DR methods to other experimental setups, are discussed.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Zingsheim, Oliver UNSPECIFIED UNSPECIFIED UNSPECIFIED Bonah, Luis UNSPECIFIED orcid.org/0000-0001-5686-7883 UNSPECIFIED Lewen, Frank UNSPECIFIED orcid.org/0000-0003-4555-2303 UNSPECIFIED Thorwirth, Sven UNSPECIFIED orcid.org/0000-0001-8200-6710 UNSPECIFIED Mueller, Holger S. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schlemmer, Stephan UNSPECIFIED orcid.org/0000-0002-1421-7281 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-565793
DOI:	10.1016/j.jms.2021.111519
Journal or Publication Title:	J. Mol. Spectrosc.
Volume:	381
Date:	2021
Publisher:	ACADEMIC PRESS INC ELSEVIER SCIENCE
Place of Publication:	SAN DIEGO
ISSN:	1096-083X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MICROWAVE-SPECTRUM; TORSIONAL SPECTRUM; CONFORMER; SPECTROMETER; BAND Multiple languages Physics, Atomic, Molecular & Chemical; Spectroscopy Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/56579