Photoelectron velocity map imaging of vibrationally excited, gas-phase biomolecules and their anions

Bakker, Daniël

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https://hdl.handle.net/2142/91245 Copy

Description

Title

Photoelectron velocity map imaging of vibrationally excited, gas-phase biomolecules and their anions

Author(s)

Bakker, Daniël

Contributor(s)

• Rijs, Anouk
• Peters, Atze
• van der Made, Rutger
• Bakels, Sjors

Issue Date

2016-06-21

Keyword(s)

Instrument/Technique Demonstration

Abstract

\begin{wrapfigure}{r}{0pt} \includegraphics[scale=0.45]{Set-up_DJB.eps} \end{wrapfigure} A powerful method in spectroscopy to characterize the structure of large, gas phase molecules is to probe the ionization yield upon irradiating the molecules with infrared (IR) and/or ultraviolet (UV) radiation. When this spectroscopic technique is employed, the photodetached electrons are usually ignored, although they contain information on, for example, the ionization threshold of the molecule and the excited states of the formed ions. Here, the novel combination of a molecular beam mass spectrometer equipped with a laser desorption source, the free electron laser FELIX and the powerful velocity map imaging (VMI) technique is presented. With this extended set of tools we can bring large molecules intact into the gas phase and prepare them in specific vibrationally excited states. UV or VUV radiation can subsequently be used to ionize the molecules. The kinetic energy and the radial distribution of the photoelectrons can be measured using VMI combined with ion detection using a time-of-flight mass spectrometer.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

En

Permalink

http://hdl.handle.net/2142/91245

Copyright and License Information

Copyright 2016 by the authors

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