Liquid-phase mega-electron-volt ultrafast electron diffraction

Authors

J. P. F. Nunes, University of Nebraska - LincolnFollow
K. Ledbetter, Stanford University
M. Lin, SLAC National Accelerator Laboratory
M. Kozina, SLAC National Accelerator Laboratory
D. P. DePonte, SLAC National Accelerator Laboratory
E. Biasin, Stanford PULSE Institute
M. Centurion, University of Nebraska - LincolnFollow
C. J. Crissman, Stanford University
M. Dunning, SLAC National Accelerator Laboratory
S. Guillet, SLAC National Accelerator Laboratory
K. Jobe, SLAC National Accelerator Laboratory
Y. Liu, Stony Brook University
M. Mo, SLAC National Accelerator Laboratory
X. Shen, SLAC National Accelerator Laboratory
R. Sublett, SLAC National Accelerator Laboratory
S. Weathersby, SLAC National Accelerator Laboratory
C. Yoneda, SLAC National Accelerator Laboratory
T. J. A. Wolf, Stanford PULSE InstituteFollow
J. Yang, SLAC National Accelerator LaboratoryFollow
A. A. Cordones, Stanford PULSE InstituteFollow
X. J. Wang, SLAC National Accelerator LaboratoryFollow

ORCID IDs

J. P. F. Nunes

K. Ledbetter

M. Kozina

M. Mo

T. J. A. Wolf

J. Yang

Date of this Version

2020

Citation

Struct. Dyn. 7, 024301 (2020)

Comments

© Author(s) 2020.

doi: 10.1063/1.5144518

Abstract

The conversion of light into usable chemical and mechanical energy is pivotal to several biological and chemical processes, many of which occur in solution. To understand the structure–function relationships mediating these processes, a technique with high spatial and temporal resolutions is required. Here, we report on the design and commissioning of a liquid-phase mega-electron-volt (MeV) ultrafast electron dif- fraction instrument for the study of structural dynamics in solution. Limitations posed by the shallow penetration depth of electrons and the resulting information loss due to multiple scattering and the technical challenge of delivering liquids to vacuum were overcome through the use of MeV electrons and a gas-accelerated thin liquid sheet jet. To demonstrate the capabilities of this instrument, the structure of water and its network were resolved up to the 3rd hydration shell with a spatial resolution of 0.6 Å; preliminary time-resolved experiments demonstrated a temporal resolution of 200 fs.