How to compute photoionization cross sections

Total and differential photoelectron cross sections can be computed using stand-alone ezDyson software:
which interacts smoothly with Q-Chem outputs. The details of theoretical models and step-by-step instructions of how to carry out such calculations are given in ezDyson user manual:

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We updated ezDyson: please download the new version at

For a comprehensive overview of the ezSpectra suite and tutorial, sign up for the upcoming webinar (03/03, 10-11 PST) hosted by Q-Chem:

See this post:

Paper describing ezDyson/ezFCF is now published: