학술논문
Photoelectron Diffraction Imaging of a Molecular Breakup Using an X-Ray Free-Electron Laser
Document Type
article
Author
Gregor Kastirke; Markus S. Schöffler; Miriam Weller; Jonas Rist; Rebecca Boll; Nils Anders; Thomas M. Baumann; Sebastian Eckart; Benjamin Erk; Alberto De Fanis; Kilian Fehre; Averell Gatton; Sven Grundmann; Patrik Grychtol; Alexander Hartung; Max Hofmann; Markus Ilchen; Christian Janke; Max Kircher; Maksim Kunitski; Xiang Li; Tommaso Mazza; Niklas Melzer; Jacobo Montano; Valerija Music; Giammarco Nalin; Yevheniy Ovcharenko; Andreas Pier; Nils Rennhack; Daniel E. Rivas; Reinhard Dörner; Daniel Rolles; Artem Rudenko; Philipp Schmidt; Juliane Siebert; Nico Strenger; Daniel Trabert; Isabel Vela-Perez; Rene Wagner; Thorsten Weber; Joshua B. Williams; Pawel Ziolkowski; Lothar Ph. H. Schmidt; Achim Czasch; Florian Trinter; Michael Meyer; Kiyoshi Ueda; Philipp V. Demekhin; Till Jahnke
Source
Physical Review X, Vol 10, Iss 2, p 021052 (2020)
Subject
Language
English
ISSN
2160-3308
Abstract
A central motivation for the development of x-ray free-electron lasers has been the prospect of time-resolved single-molecule imaging with atomic resolution. Here, we show that x-ray photoelectron diffraction—where a photoelectron emitted after x-ray absorption illuminates the molecular structure from within—can be used to image the increase of the internuclear distance during the x-ray-induced fragmentation of an O_{2} molecule. By measuring the molecular-frame photoelectron emission patterns for a two-photon sequential K-shell ionization in coincidence with the fragment ions, and by sorting the data as a function of the measured kinetic energy release, we can resolve the elongation of the molecular bond by approximately 1.2 a.u. within the duration of the x-ray pulse. The experiment paves the road toward time-resolved pump-probe photoelectron diffraction imaging at high-repetition-rate x-ray free-electron lasers.