Digitized boundary and scanning isotherms from "The Thermodynamics and Hysteresis of Adsorption" by A. J. Brown, PhD Dissertation, University of Bristol (UK), 1963

The dissertation "The Thermodynamics and Hysteresis of Adsorption" by A. J. Brown, contains unique measurements of adsorption/desorption isotherms of Xenon, Krypton, and Carbon Dioxide in Vycor Glass. A particular hallmark of this set of isotherms is an extensive set of scanning isotherms of Xenon at 151 K, examining numerous trajectories inside the adsorption-desorption hysteresis loop. The isotherms were provided in tabular form in appendices of the dissertation, allowing for conversion to digital files without loss of fidelity. The digital files contain the dissertation's tables verbatim, with no modification or editorial adjustments. When there are suspected data errors (primarily typographic errors, but some possible measurement errors), the digital files contain annotations that point out the possible errors and proposed editorial corrections.The isotherms are stored in self-descriptive CSV files, which can be opened and manipulated with any spreadsheet software. For ease of use, several scripts for handling and processing the isotherms are available in a GitHub repository: https://github.com/nist-isodb/AJBrownThesisIsotherms. The repository also includes example Jupyter Notebook sheets that demonstrate how to use the supporting software scripts.