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Coulomb explosion imaging of small polyatomic molecules with ultrashort x-ray pulses

2022; American Physical Society; Volume: 4; Issue: 1 Linguagem: Inglês

10.1103/physrevresearch.4.013029

2643-1564

Xiang Li, Artem Rudenko, M. S. Schöffler, N. Anders, Th. Baumann, S. Eckart, Benjamin Erk, A. De Fanis, K. Fehre, R. Dörner, L. Foucar, Sven Grundmann, Patrik Grychtol, Alexander Hartung, M. Hofmann, Markus Ilchen, Ch. Janke, Gregor Kastirke, M. Kircher, Katharina Kubiček, M. Kunitski, Tommaso Mazza, Severin Meister, N. Melzer, J. Montaño, Valerija Music, G. Nalin, Yevheniy Ovcharenko, C. Passow, A. Pier, Nils Rennhack, J. Rist, Daniel E. Rivas, Ilme Schlichting, L. Ph. H. Schmidt, Ph. Schmidt, J. Siebert, N. Strenger, D. Trabert, Florian Trinter, Isabel Vela-Peréz, R. Wagner, Peter Walter, M. Weller, Paweł Ziółkowski, A. Czasch, Daniel Rolles, Michael Meyer, T. Jahnke, Rebecca Boll,

Laser-Plasma Interactions and Diagnostics

Ultrashort x-ray pulses from free-electron lasers can efficiently charge up and trigger the full fragmentation of molecules. By coincident detection of up to five ions resulting from rapid Coulomb explosion of highly charged iodomethane, we show that the full three-dimensional equilibrium geometry of this prototypical polyatomic system can be determined from the measured ion momenta with the help of a charge buildup model. Supported by simulations of how the ion momenta would reflect specific changes in molecular bond lengths and angles, we demonstrate that Coulomb-explosion imaging with ultrashort x-ray pulses is a promising technique for recording movies of multidimensional nuclear wave packets, including hydrogen motions.