High-resolution Double Resonance Action Spectroscopy In Ion Traps: Vibrational And Rotational Fingerprints Of Ch₂nh₂⁺

Markus, Charles R.

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https://hdl.handle.net/2142/111389 Copy

Description

Title

High-resolution Double Resonance Action Spectroscopy In Ion Traps: Vibrational And Rotational Fingerprints Of Ch₂nh₂⁺

Author(s)

Markus, Charles R.

Contributor(s)

• Schlemmer, Stephan
• Asvany, Oskar
• Thorwirth, Sven

Issue Date

2021-06-22

Keyword(s)

Ions

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 reduction in the number of CH$_2$NH$_2^+$-He complexes formed in the 4~K He bath of the trap.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

Permalink

http://hdl.handle.net/2142/111389

DOI

10.15278/isms.2021.TL04

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