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Title:VIBRATIONAL AND ROTATIONAL SPECTROSCOPY IN CRYOGENIC ION TRAPS
Author(s):Brünken, Sandra
Contributor(s):Schlemmer, Stephan; Asvany, Oskar; Jusko, Pavol; Redlich, Britta
Subject(s):Plenary
Abstract:Reactive molecular ions play a central role in the chemistry of the interstellar medium and in planetary atmospheres. Spectroscopic studies of these often elusive ions yield fundamental insights on their geometrical and electronic structure, and provide vibrational and rotational signatures needed for their identification in space. Cryogenic ion traps have proven to be ideal tools for the development of sensitive spectroscopic schemes of mass-selected, cold, and isolated molecular ions. Recent progress on these so-called action spectroscopic methods allows not only to probe electronic and vibrational excitation processes, but also to record high-resolution purely rotational molecular spectra\footnote{ S. Br\"{u}nken, L. Kluge, A. Stoffels, O. Asvany, and S. Schlemmer, Astrophys. J. Lett., 783, L4 (2014); A. Stoffels, L. Kluge, S. Schlemmer, and S. Br\"{u}nken, A\&A 593, A56 (2016); S. Br\"{u}nken, L. Kluge, A. Stoffels, J. Pèrez-Rios, and S. Schlemmer, J. Mol. Spectrosc., 332, 67 (2017)}, which are a direct prerequisite for radio-astronomical detections of new species in space as will be demonstrated with selected examples. In addition, details of broadband infrared experiments on several astrophysically important hydrocarbon cations ranging in size from comparatively small systems (e.g., C$_2$H$^+$, C$_3$H$_2^+$, and C$_3$H$^+$) to PAH cations will be given, using the unique combination of a cryogenic ion trap instrument\footnote{ O. Asvany, S. B\"{u}nken, L. Kluge, and S. Schlemmer, Appl. Phys. B, 114, 203 (2014)} interfaced to the free electron lasers at the FELIX Laboratory.
Issue Date:06/21/18
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:APS
Genre:Conference Paper / Presentation
Type:Text
Language:English
URI:http://hdl.handle.net/2142/100455
DOI:10.15278/isms.2018.RA01
Other Identifier(s):RA01
Date Available in IDEALS:2018-08-17
2018-12-12


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