Rouzée, A F Tavella H Redlin S Düsterer Y Huismans W Siu A Hundertmark L Rading P Johnsson N Stojanovic Magnified portion of panel (e) of figure 5, highlighting the Coulomb explosion dynamics <p><strong>Figure 6.</strong> Magnified portion of panel (e) of figure <a href="http://iopscience.iop.org/0953-4075/46/16/164029/article#jpb465815f5" target="_blank">5</a>, highlighting the Coulomb explosion dynamics. The white interconnected dots show the fragment energies predicted by the classical model for three different Coulomb explosion channels: Br<sup>2 +</sup>+Br<sup>+</sup>, Br<sup>2 +</sup>+Br<sup>2 +</sup> and Br<sup>2 +</sup>+Br<sup>3 +</sup>.</p> <p><strong>Abstract</strong></p> <p>The dissociation dynamics induced by a 100 fs, 400 nm laser pulse in a rotationally cold Br<sub>2</sub> sample was characterized by Coulomb explosion imaging (CEI) using a time-delayed extreme ultra-violet (XUV) FEL pulse, obtained from the Free electron LASer in Hamburg (FLASH). The momentum distribution of atomic fragments resulting from the 400 nm-induced dissociation was measured with a velocity map imaging spectrometer and used to monitor the internuclear distance as the molecule dissociated. By employing the simultaneously recorded in-house timing electro-optical sampling data, the time resolution of the final results could be improved to 300 fs, compared to the inherent 500 fs time-jitter of the FEL pulse. Before dissociation, the Br<sub>2</sub> molecules were transiently 'fixed in space' using laser-induced alignment. In addition, similar alignment techniques were used on CO<sub>2</sub> molecules to allow the measurement of the photoelectron angular distribution (PAD) directly in the molecular frame (MF). Our results on MFPADs in aligned CO<sub>2</sub> molecules, together with our investigation of the dissociation dynamics of the Br<sub>2</sub> molecules with CEI, show that information about the evolving molecular structure and electronic geometry can be retrieved from such experiments, therefore paving the way towards the study of complex non-adiabatic dynamics in molecules through XUV time-resolved photoion and photoelectron spectroscopy.</p> xuv;Coulomb explosion imaging;MFPAD;FEL pulse;Coulomb explosion channels;mf;cei;velocity map imaging spectrometer;flash;CO 2 molecules;Coulomb explosion dynamics;Free Electron LASer;dissociation dynamics;Br 2 sample;pad;Br 2 molecules;Atomic Physics;Molecular Physics 2013-08-13
    https://iop.figshare.com/articles/figure/_Magnified_portion_of_panel_e_of_figure_a_href_http_iopscience_iop_org_0953_4075_46_16_164029_articl/1012492
10.6084/m9.figshare.1012492.v1