Alignment, orientation, and Coulomb explosion of difluoroiodobenzene studied with the pixel imaging mass spectrometry (PImMS) camera

2017-05-09 | journal article. A publication of Göttingen

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​Alignment, orientation, and Coulomb explosion of difluoroiodobenzene studied with the pixel imaging mass spectrometry (PImMS) camera​
Amini, K.; Boll, R.; Lauer, A.; Burt, M.; Lee, J. W. L.; Christensen, L. & Brausse, F. et al.​ (2017) 
The Journal of Chemical Physics147(1) art. 013933​.​ DOI: 

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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; Techert, Simone ; Toleikis, Sven; Treusch, Rolf; Trippel, Sebastian; Ulmer, Anatoli; Wiese, Joss; Vallance, Claire; Rudenko, Artem; Stapelfeldt, Henrik; Brouard, Mark; Rolles, Daniel
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.
Issue Date
The Journal of Chemical Physics 
Institut für Röntgenphysik 
Working Group
RG Techert (Structural Dynamics in Chemical Systems) 
1089-7690; 0021-9606



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