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Title: Femtosecond gas-phase mega-electron-volt ultrafast electron diffraction

Abstract

The development of ultrafast gas electron diffraction with non-relativistic electrons has enabled determination of molecular structures with atomic spatial resolution. It has, however, been challenging to break the picosecond temporal resolution barrier and achieve the goal that has long been envisioned – making space- and-time resolved molecular movies of chemical reaction in the gas-phase. Recently, an ultrafast electron diffraction (UED) apparatus using mega-electron-volt (MeV) electrons was developed at SLAC National Accelerator Laboratory for imaging ultrafast structural dynamics of molecules in the gas phase. The SLAC gas-phase MeV UED has achieved 70 fs root-mean-square temporal resolution, 0.63 Å spatial resolution, and 0.22 Å–1 reciprocal-space resolution. Such high spatial-temporal resolution has enabled the capturing of real-time molecular movies of fundamental photochemical mechanisms, such as chemical bond breaking, ring opening, and a nuclear wave packet crossing a conical intersection. In this paper, the design that enables the high spatial-temporal resolution of the SLAC gas phase MeV UED is presented. The compact design of the differential pump section of the SLAC gas phase MeV UED realized five orders-of-magnitude vacuum isolation between the electron source and gas sample chamber. The spatial resolution, temporal resolution and long-term stability of the apparatus are systematically characterized.

Authors:
 [1]; ORCiD logo [2];  [1];  [1];  [3];  [1];  [2]; ORCiD logo [4];  [1]; ORCiD logo [1];  [1];  [4];  [2];  [1]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Univ. of Nebraska, Lincoln, NE (United States)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States); Tsinghua Univ., Beijing (China)
  4. Universität Potsdam (Germany)
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Univ. of Nebraska, Lincoln, NE (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; USDOE
OSTI Identifier:
1572204
Alternate Identifier(s):
OSTI ID: 1570490; OSTI ID: 1698037
Report Number(s):
DOE-SLAC-00515; DOE-Nebraska-Lincoln-14170
Journal ID: ISSN 2329-7778; TRN: US2100318
Grant/Contract Number:  
AC02-76SF00515; SC0014170
Resource Type:
Accepted Manuscript
Journal Name:
Structural Dynamics
Additional Journal Information:
Journal Volume: 6; Journal Issue: 5; Conference: 4. Femtosecond Electron Imaging and Spectroscopy (FEIS 4), Lincoln, NE (United States), 13-15 May 2019; Journal ID: ISSN 2329-7778
Publisher:
American Crystallographic Association/AIP
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS

Citation Formats

Shen, X., Nunes, J. P. F., Yang, J., Jobe, R. K., Li, R. K., Lin, Ming-Fu, Moore, B., Niebuhr, M., Weathersby, S. P., Wolf, T. J. A., Yoneda, C., Guehr, Markus, Centurion, Martin, and Wang, X. J. Femtosecond gas-phase mega-electron-volt ultrafast electron diffraction. United States: N. p., 2019. Web. doi:10.1063/1.5120864.
Shen, X., Nunes, J. P. F., Yang, J., Jobe, R. K., Li, R. K., Lin, Ming-Fu, Moore, B., Niebuhr, M., Weathersby, S. P., Wolf, T. J. A., Yoneda, C., Guehr, Markus, Centurion, Martin, & Wang, X. J. Femtosecond gas-phase mega-electron-volt ultrafast electron diffraction. United States. https://doi.org/10.1063/1.5120864
Shen, X., Nunes, J. P. F., Yang, J., Jobe, R. K., Li, R. K., Lin, Ming-Fu, Moore, B., Niebuhr, M., Weathersby, S. P., Wolf, T. J. A., Yoneda, C., Guehr, Markus, Centurion, Martin, and Wang, X. J. Tue . "Femtosecond gas-phase mega-electron-volt ultrafast electron diffraction". United States. https://doi.org/10.1063/1.5120864. https://www.osti.gov/servlets/purl/1572204.
@article{osti_1572204,
title = {Femtosecond gas-phase mega-electron-volt ultrafast electron diffraction},
author = {Shen, X. and Nunes, J. P. F. and Yang, J. and Jobe, R. K. and Li, R. K. and Lin, Ming-Fu and Moore, B. and Niebuhr, M. and Weathersby, S. P. and Wolf, T. J. A. and Yoneda, C. and Guehr, Markus and Centurion, Martin and Wang, X. J.},
abstractNote = {The development of ultrafast gas electron diffraction with non-relativistic electrons has enabled determination of molecular structures with atomic spatial resolution. It has, however, been challenging to break the picosecond temporal resolution barrier and achieve the goal that has long been envisioned – making space- and-time resolved molecular movies of chemical reaction in the gas-phase. Recently, an ultrafast electron diffraction (UED) apparatus using mega-electron-volt (MeV) electrons was developed at SLAC National Accelerator Laboratory for imaging ultrafast structural dynamics of molecules in the gas phase. The SLAC gas-phase MeV UED has achieved 70 fs root-mean-square temporal resolution, 0.63 Å spatial resolution, and 0.22 Å–1 reciprocal-space resolution. Such high spatial-temporal resolution has enabled the capturing of real-time molecular movies of fundamental photochemical mechanisms, such as chemical bond breaking, ring opening, and a nuclear wave packet crossing a conical intersection. In this paper, the design that enables the high spatial-temporal resolution of the SLAC gas phase MeV UED is presented. The compact design of the differential pump section of the SLAC gas phase MeV UED realized five orders-of-magnitude vacuum isolation between the electron source and gas sample chamber. The spatial resolution, temporal resolution and long-term stability of the apparatus are systematically characterized.},
doi = {10.1063/1.5120864},
journal = {Structural Dynamics},
number = 5,
volume = 6,
place = {United States},
year = {Tue Oct 15 00:00:00 EDT 2019},
month = {Tue Oct 15 00:00:00 EDT 2019}
}

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journal, October 2008


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journal, January 2018


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Ultrafast Electron Diffraction. 5. Experimental Time Resolution and Applications
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Clocking transient chemical changes by ultrafast electron diffraction
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  • Nature Communications, Vol. 7, Issue 1
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Imaging of alignment and structural changes of carbon disulfide molecules using ultrafast electron diffraction
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A compact X-ray free-electron laser emitting in the sub-ångström region
journal, June 2012


The photochemical ring-opening of 1,3-cyclohexadiene imaged by ultrafast electron diffraction
journal, April 2019


Hard X-ray free-electron laser with femtosecond-scale timing jitter
journal, October 2017


Femtosecond gas phase electron diffraction with MeV electrons
journal, January 2016

  • Yang, Jie; Guehr, Markus; Vecchione, Theodore
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Instrumentation for time-resolved electron diffraction spanning the time domain from microseconds to picoseconds
journal, July 1998

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journal, October 2006

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Experimental demonstration of high quality MeV ultrafast electron diffraction
journal, August 2009

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Note: Single-shot continuously time-resolved MeV ultrafast electron diffraction
journal, March 2010

  • Li, Renkai; Huang, Wenhui; Du, Yingchao
  • Review of Scientific Instruments, Vol. 81, Issue 3
  • DOI: 10.1063/1.3361196

Capturing ultrafast structural evolutions with a single pulse of MeV electrons: Radio frequency streak camera based electron diffraction
journal, December 2010

  • Musumeci, P.; Moody, J. T.; Scoby, C. M.
  • Journal of Applied Physics, Vol. 108, Issue 11
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Transmission-electron diffraction by MeV electron pulses
journal, June 2011

  • Murooka, Y.; Naruse, N.; Sakakihara, S.
  • Applied Physics Letters, Vol. 98, Issue 25
  • DOI: 10.1063/1.3602314

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journal, July 2013

  • Gao, M.; Jiang, Y.; Kassier, G. H.
  • Applied Physics Letters, Vol. 103, Issue 3
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Mega-electron-volt ultrafast electron diffraction at SLAC National Accelerator Laboratory
journal, July 2015

  • Weathersby, S. P.; Brown, G.; Centurion, M.
  • Review of Scientific Instruments, Vol. 86, Issue 7
  • DOI: 10.1063/1.4926994

A direct electron detector for time-resolved MeV electron microscopy
journal, March 2017

  • Vecchione, T.; Denes, P.; Jobe, R. K.
  • Review of Scientific Instruments, Vol. 88, Issue 3
  • DOI: 10.1063/1.4977923

Breaking resolution limits in ultrafast electron diffraction and microscopy
journal, October 2006

  • Baum, P.; Zewail, A. H.
  • Proceedings of the National Academy of Sciences, Vol. 103, Issue 44
  • DOI: 10.1073/pnas.0607451103

Tilted femtosecond pulses for velocity matching in gas-phase ultrafast electron diffraction
journal, August 2014


Femtosecond time-resolved MeV electron diffraction
journal, June 2015


Imaging of Isolated Molecules with Ultrafast Electron Pulses
journal, September 2012


Imaging Molecular Motion: Femtosecond X-Ray Scattering of an Electrocyclic Chemical Reaction
journal, June 2015


Dark Structures in Molecular Radiationless Transitions Determined by Ultrafast Diffraction
journal, January 2005


Imaging CF 3 I conical intersection and photodissociation dynamics with ultrafast electron diffraction
journal, July 2018


Diffractive Imaging of Coherent Nuclear Motion in Isolated Molecules
text, January 2016