Open AccessTwo mirror X-ray pulse split and delay instrument for femtosecond time resolved investigations at the LCLS free electron laser facility
Author(s) -
N. Berrah,
Fang Li,
Brendan Murphy,
E. Kukk,
T. Osipov,
Ryan Coffee,
Ken Ferguson,
Hui Xiong,
Jean-Charles Castagna,
V. Petrovic,
S. Carron Montero,
John D. Bozek
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.011768
Subject(s) - femtosecond , attosecond , optics , laser , linear particle accelerator , free electron laser , physics , electron , extreme ultraviolet , materials science , ultrashort pulse , nuclear physics , beam (structure)
We built a two-mirror based X-ray split and delay (XRSD) device for soft X-rays at the Linac Coherent Light Source free electron laser facility. The instrument is based on an edge-polished mirror design covering an energy range of 250 eV-1800 eV and producing a delay between the two split pulses variable up to 400 femtoseconds with a sub-100 attosecond resolution. We present experimental and simulation results regarding molecular dissociation dynamics in CH 3 I and CO probed by the XRSD device. We observed ion kinetic energy and branching ratio dependence on the delay times which were reliably produced by the XRSD instrument.