Robinson, Matthew S., Lane, Paul D. and Wann, Derek A. orcid.org/0000-0002-5495-274X (2016) Simulations of the temporal and spatial resolution for a compact time-resolved electron diffractometer. Journal of Physics B: Atomic, Molecular and Optical Physics. 034003. ISSN 1361-6455
Abstract
A novel compact electron gun for use in time-resolved gas electron diffraction experiments has recently been designed and commissioned. In this paper we present and discuss the extensive simulations that were performed to underpin the design in terms of the spatial and temporal qualities of the pulsed electron beam created by the ionisation of a gold photocathode using a femtosecond laser. The response of the electron pulses to a solenoid lens used to focus the electron beam has also been studied. The simulated results show that focussing the electron beam affects the overall spatial and temporal resolution of the experiment in a variety of ways, and that factors that improve the resolution of one parameter can often have a negative effect on the other. A balance must, therefore, be achieved between spatial and temporal resolution. The optimal experimental time resolution for the apparatus is predicted to be 416 fs for studies of gas-phase species, while the predicted spatial resolution of better than 2 nm-1 compares well with traditional time-averaged electron diffraction set-ups.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 IOP Press. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details |
Keywords: | spatial resolution,temporal resolution,time-resolved electron diffraction |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) The University of York |
Funding Information: | Funder Grant number EPSRC EP/I004122/2 |
Depositing User: | Pure (York) |
Date Deposited: | 09 Feb 2016 13:41 |
Last Modified: | 13 Dec 2024 00:05 |
Published Version: | https://doi.org/10.1088/0953-4075/49/3/034003 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1088/0953-4075/49/3/034003 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:94819 |
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