Wavelength-dependent photodissociation of iodomethylbutane
Abstract
Abstract Ultrashort XUV pulses of the Free-Electron-LASer in Hamburg (FLASH) were used to investigate laser-induced fragmentation patterns of the prototypical chiral molecule 1-iodo-2-methyl-butane ( $$\hbox {C}_5$$ $$\hbox {H}_{11}$$ I) in a pump-probe scheme. Ion velocity-map images and mass spectra of optical-laser-induced fragmentation were obtained for subsequent FEL exposure with photon energies of 63 eV and 75 eV. These energies specifically address the iodine 4d edge of neutral and singly charged iodine, respectively. The presented ion spectra for two optical pump-laser wavelengths, i.e., 800 nm and 267 nm, reveal substantially different cationic fragment yields in dependence on the wavelength and intensity. For the case of 800-nm-initiated fragmentation, the molecule dissociates notably slower than for the 267 nm pump. The results underscore the importance of considering optical-laser wavelength and intensity in the dissociation dynamics of this prototypical chiral molecule that is a promising candidate for future studies of its asymmetric nature.
Article Details
Authors (40)
Valerija Music
Felix Allum
Stanford PULSE Institute
Ludger Inhester
Philipp Schmidt
European XFEL, Holzkoppel 4, Schenefeld 22869, Germany
Rebecca Boll
European XFEL , Holzkoppel 4 , ,
Thomas M. Baumann
Günter Brenner
Mark Brouard
Chemistry Research Laboratory, Department of Chemistry
Michael Burt
Chemistry Research Laboratory, Department of Chemistry
Philipp V. Demekhin
Simon Dörner
Arno Ehresmann
Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
Andreas Galler
Patrik Grychtol
David Heathcote
Denis Kargin
Mats Larsson
Department of Physics, Stockholm University
Jason W. L. Lee
Zheng Li
Bastian Manschwetus
Lutz Marder
Robert Mason
Michael Meyer
Huda Otto
Christopher Passow
Rudolf Pietschnig
Daniel Ramm
Daniel Rolles
James R. Macdonald Laboratory, Physics Department
Kaja Schubert
Lucas Schwob
Richard D. Thomas
Department of Physics
Claire Vallance
Igor Vidanovic
Clemens von Korff Schmising
René Wagner
Vitali Zhaunerchyk
Peter Walter
Sadia Bari
Benjamin Erk
Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, Hamburg 22607, Germany
Markus Ilchen
Deutsches Elektronen-Synchrotron DESY , Notkestr. 85 , ,