University of Illinois Urbana-Champaign

Isolated small-amplitude fundamentals embedded in a pure torsional bath: FIR and MW spectra of the ν10 vibrational mode and hot torsional bands of acetaldehyde

Ilyushin, V.

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1378819.pptx
3757.pdf

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https://hdl.handle.net/2142/104228

Description

Title
Isolated small-amplitude fundamentals embedded in a pure torsional bath: FIR and MW spectra of the ν10 vibrational mode and hot torsional bands of acetaldehyde
Author(s)
Ilyushin, V.
Contributor(s)
  • Hougen, Jon T.
  • Kleiner, Isabelle
  • Mellau, Georg Ch.
  • Sydow, Christian
  • Maul, Christof
  • Bauerecker, Sigurd
  • Pirali, Olivier
  • Goubet, Manuel
  • Motiyenko, R.A.
  • Margulès, L.
  • Kalambet, Mariia
  • Dorovskaya, Olga
  • Alekseev, E.A.
Issue Date
2019-06-17
Keyword(s)
  • Large amplitude motions
  • Internal rotation
Date of Ingest
  • 2019-07-15T22:16:25Z
  • 2020-01-25T19:29:15Z
Abstract
We present\footnote{This talk is dedicated to the memory of Dr. Jon T. Hougen (who recently passed away) in recognition of his essential contribution to this project.} the results of achieved progress in our analysis of the far-IR and microwave spectra of the \nub{10} vibrational state of acetaldehyde\footnote{This work was done under support of the Volkswagen foundation. The assistance of STCU is acknowledged (partner project P686).}. The analysis of the gs - \nub{10} band near 509 \wn involves the energy levels that belong to the v$_t$ =0, 1 torsional states of \nub{10} vibrational mode as well as v$_t$ =0, 1, 2, 3, 4 torsional states of the ground vibrational state. The intervibrational interactions between \nub{10} vibrational state and torsional bath is taken explicitly into account with the help of a new program which was recently developed for fitting several isolated small-amplitude fundamentals embedded in a pure torsional bath in molecules with C$_{s}$ frame and C$_{3v}$ top. Obtained results provide significant progress in comparison with the previous fitting attempts for gs - \nub{10} band of acetaldehyde near 509 \wn. In the talk the details of the results with emphasis on the remaining fitting problems for the hot torsional bands\footnote{The authors are indebted to Dr. A.R.W. McKellar for providing raw spectrum data on torsional bands of acetaldehyde from previous study.} of acetaldehyde will be discussed.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
eng
Permalink
http://hdl.handle.net/2142/104228
DOI
https://doi.org/10.15278/isms.2019.MI05
Copyright and License Information
Copyright 2019 V. Ilyushin

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Abstracts & Presentations - 2019 International Symposium on Molecular Spectroscopy PRIMARY