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A "circularisation" method to repair deformations and determine the centre of velocity map images

Gascooke, Jason R; Gibson, Stephen; Lawrance, Warren Donald


A problem besetting the analysis of velocity map images, particularly those of photoelectrons, is the presence of distortions that cause the features in the image to deviate from circularity, leading to a loss of resolution in the spectrum extracted. A method is presented to repair such distortions based on fitting the angular behaviour of each of the ring structures to a trigonometric expansion. The repair function allows the intensity at any value of radius and angle to be mapped to a new...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
Source: Journal of Chemical Physics
DOI: 10.1063/1.4981024
Access Rights: Open Access


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