%0 Figure %A H Jiang, Y %A V Tilborg, J %A Lezius, M %A F Kling, M %A Herrwerth, O %A Foucar, L %A Rudenko, A %A Kurka, M %A Senftleben, A %A Belkacem, A %D 2013 %T Experimental kinetic energy releases (KER) for (a) C2H22+ → H++C2H+, (b) C2H22+ → CH++CH+, (c) C2H22+ → C++CH2+ and (d) C2H23+ → H++C2H2+ integrated over all delay times |τ| < 350 fs %U https://iop.figshare.com/articles/figure/_Experimental_kinetic_energy_releases_KER_for_a_C_sub_2_sub_H_sub_2_sub_sup_2_sup__H_sup_sup_C_sub_2/1012470 %R 10.6084/m9.figshare.1012470.v1 %2 https://iop.figshare.com/ndownloader/files/1480292 %K xuv %K ch %K C 2H %K energy releases %K ultrafast %K ker %K Atomic Physics %K Molecular Physics %X

Figure 2. Experimental kinetic energy releases (KER) for (a) C2H22+ → H++C2H+, (b) C2H22+ → CH++CH+, (c) C2H22+ → C++CH2+ and (d) C2H23+ → H++C2H2+ integrated over all delay times |τ| < 350 fs.

Abstract

Few-photon induced ultrafast dynamics in acetylene (C2H2) leading to several dissociation channels—deprotonation (H++C2H+ and H++C2H2+), symmetric break-up (CH++CH+) and isomerization (C++CH2+)-–were investigated employing the (XUV; extreme ultra-violet)-pump–(XUV; extreme ultra-violet)-probe scheme at the free-electron laser in Hamburg, combined with multi-hit coincidence detection. The kinetic energy releases and fragment-ion momentum distributions for various decay channels are presented. The C++CH2+ and H++C2H2+ channels reveal clear signatures of ultrafast molecular mechanisms, demonstrating potential applications of our pump-probe technique to complex systems in order to study a large variety of ultrafast phenomena in the XUV regime.

%I IOP Publishing