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Title:HIGH-RESOLUTION DOUBLE RESONANCE ACTION SPECTROSCOPY IN ION TRAPS: VIBRATIONAL AND ROTATIONAL FINGERPRINTS OF CH2NH2+
Author(s):Thorwirth, Sven
Contributor(s):Schlemmer, Stephan ; Asvany, Oskar ; Markus, Charles R.
Subject(s):Astronomy
Abstract:Applying various action spectroscopic techniques in a 4~K cryogenic ion trap instrument, protonated methanimine, CH$_2$NH$_2^+$, has been investigated by high-resolution rovibrational and pure rotational spectroscopy for the first time. In total, 39 rovibrational transitions within the fundamental band of the $\nu_2$ symmetric C-H stretch were measured around 3026\,cm$^{-1}$, which were used to predict pure rotational transition frequencies of CH$_2$NH$_2^+$ in the ground vibrational state. Based on these predictions, nine rotational transitions were observed between 109 and 283~GHz using a novel double resonance method. This method consists of rotational excitation followed by vibrational excitation, which is finally detected as a dip in the number of CH$_2$NH$_2^+$-He complexes formed in the 4~K He bath of the trap.
Issue Date:23-Jun-20
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:APS
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/107463
Date Available in IDEALS:2020-06-26


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