The Spectrum Of ν₃ Band Of Ch₃⁺ In Helium Nanodroplets

Erukala, Swetha

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https://hdl.handle.net/2142/111179 Copy

Description

Title

The Spectrum Of ν₃ Band Of Ch₃⁺ In Helium Nanodroplets

Author(s)

Erukala, Swetha

Contributor(s)

• Vilesov, Andrey
• Verma, Deepak

Issue Date

2021-06-22

Keyword(s)

Ions

Abstract

$CH_3^+$ ions were produced upon electron impact ionization of the He droplets doped with methane molecules.The spectra was obtained by recording the intensity of ions detected based upon upon ejection from the droplet following absorption of multiple mid infrared photons\footnote{D. Verma, E.Swetha, A.F. Vilesov, Infrared Spectroscopy of Water and Zundel cations in Helium Nanodroplets, The Journal of Physical Chemistry A 124(34) (2020) 6207-6213.}. Perpendicular \nub{3} band of $CH_3^+$ in He droplets shows three prominent peaks which are assigned to partially resolved rotational structure. The results show that $CH_3^+$ retains the ability to rotate in liquid helium, however the decrement of rotational constants is larger than previously observed for neutrals. It was concluded that $CH_3^+$ in helium behaves as a prolate symmetric top, whereas the free ion is reported to be an oblate top \footnote{ M.W. Crofton, M.F. Jagod, B.D. Rehfuss, W.A. Kreiner, T. Oka, Infrared-Spectroscopy of Carbo-Ions .III. \nub{3} Band of Methyl Cation $CH_3^+$, Journal of Chemical Physics 88(2)(1988) 666-678}.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

Permalink

http://hdl.handle.net/2142/111179

DOI

10.15278/isms.2021.TL03

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