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Alignment, orientation, and Coulomb explosion of difluoroiodobenzene studied with the pixel imaging mass spectrometry (PImMS) camera
ISSN
1089-7690
0021-9606
Date Issued
2017
Author(s)
Amini, Kasra
Boll, Rebecca
Lauer, Alexandra
Burt, Michael
Lee, Jason W. L.
Christensen, Lauge
Brausse, Felix
Mullins, Terence
Savelyev, Evgeny
Ablikim, Utuq
Berrah, Nora
Bomme, Cedric
Duesterer, Stefan
Erk, Benjamin
Hoeppner, Hauke
Johnsson, Per
Kierspel, Thomas
Krecinic, Faruk
Kuepper, Jochen
Mueller, Maria
Mueller, Erland
Redlin, Harald
Rouzee, Arnaud
Schirmel, Nora
Thogersen, Jan
Toleikis, Sven
Treusch, Rolf
Trippel, Sebastian
Ulmer, Anatoli
Wiese, Joss
Vallance, Claire
Rudenko, Artem
Stapelfeldt, Henrik
Brouard, Mark
Rolles, Daniel
DOI
10.1063/1.4982220
Abstract
Laser-induced adiabatic alignment and mixed-field orientation of 2,6-difluoroiodobenzene (C6H3F2I) molecules are probed by Coulomb explosion imaging following either near-infrared strong-field ionization or extreme-ultraviolet multi-photon inner-shell ionization using free-electron laser pulses. The resulting photoelectrons and fragment ions are captured by a double-sided velocity map imaging spectrometer and projected onto two position-sensitive detectors. The ion side of the spectrometer is equipped with a pixel imaging mass spectrometry camera, a time-stamping pixelated detector that can record the hit positions and arrival times of up to four ions per pixel per acquisition cycle. Thus, the time-of-flight trace and ion momentum distributions for all fragments can be recorded simultaneously. We show that we can obtain a high degree of one-and three-dimensional alignment and mixed-field orientation and compare the Coulomb explosion process induced at both wavelengths.