Abstract
X-ray free electron lasers (XFELs) providing ultrashort intense pulses of X-rays have proven to be excellent tools to investigate the dynamics of radiation-induced dissociation and charge redistribution in molecules and nanoparticles. Coincidence techniques, in particular multi-ion time-of-flight (TOF) coincident experiments, can provide detailed information on the photoabsorption, charge generation, and Coulomb explosion events. Here we review several such recent experiments performed at the SPring-8 Angstrom Compact free electron LAser (SACLA) facility in Japan, with iodomethane, diiodomethane, and 5-iodouracil as targets. We demonstrate how to utilize the momentum-resolving capabilities of the ion TOF spectrometers to resolve and filter the coincidence data and extract various information essential in understanding the time evolution of the processes induced by the XFEL pulses.
Highlights
Nuclear motion in molecules and clusters takes place in a timescale starting from a few femtoseconds
The results presented in this article are based on experiments performed at SPring-8 Angstrom Compact free electron LAser (SACLA) X-ray free electron lasers (XFELs) in
We show how multi-ion coincidence analysis can be applied in combination with the momentum filtering (MF) as a powerful tool for extracting information on femtosecond-scale molecular dynamics
Summary
Nuclear motion in molecules and clusters takes place in a timescale starting from a few femtoseconds. In order to accurately observe such motion and trace its development, a sufficiently short initiating pulse of radiation is needed as not to obscure the real dynamics. Lasers have provided such an excitation source. The advent of free electron lasers (FELs) operating in the UV- and X-ray regime, opened up completely new avenues, providing access to tunable atomic inner-shell multiphoton excitation and ionization in femtosecond timescales [4,5,6,7,8,9,10,11]. The full results of these experiments and their interpretation are published or submitted for publication elsewhere, in [12] for CH3 I, in [13] for CH2 I2 , and in [14,15] for 5-iodouracil
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
