Dataset Supporting '2D helium atom diffraction from a microscopic spot'
Repository URI
Repository DOI
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Authors
von Jeinsen, Nick
Bergin, Matthew
Radic, Aleksandar
Liu, Boyao
Description
The data supports the publication "2D helium atom diffraction from a microscopic spot". Raw data is provided in '.mat' format (matlab data file format), analysis and plotting of the diffraction is done via the provided jupyter notebook which explains the procedures done to the data. The jupyter notebook relies on the 'shem_spot_profile' class, (stored in github: https://github.com/slambrick/SHeM-diffraction-analysis) and the version used with the analysis as a permanent record on Zenodo (), the python class file is included in the data pack for completeness. Data for the SHeM images are provided in .mat files and as .png files.
Version
Software / Usage instructions
Open and run the jupyter notebook for the diffraction analysis. The diffraction scans contain a 'meas' struct with metadata and the core data as 'counts' in amps and 'z_positions' in nm.
The SHeM images '.mat' files contain a cell array 'meas_list', get the struct containing information on an images via 'meas_list{1}', the struct contains 'image' which is a matrix of the image, 'target' which is a list of xy positions the pixels were taken at and 'data' which has the signals corresponding to the xy point, plus somemetadata. The images are also provided as Gwyddion file and pngs for easy opening.
The subfolder "LiF_tracking_with_data_files" contains a matlab live script (.mlx file) which has analysis for the point tracking calibration.
Keywords
atom diffraction, helium atom scattering, neutral atom microscopy, scanning helium microscopy
Publisher
Sponsorship
The work was supported by EPSRC grant EP/R008272/1. The authors acknowledge support by the Cambridge Atom Scattering Centre (\url{https://atomscattering.phy.cam.ac.uk}) and EPSRC award EP/T00634X/1. The work was performed in part at the Materials and NSW node of the Australian National Fabrication Facility, a company established under the National Collaborative Research Infrastructure Strategy to provide nano and microfabrication facilities for Australia’s researchers. SML acknowledges funding from MathWorks Ltd. BL acknowledges financial support from the CSC and the Cambridge Trust.