Photofragment image analysis using the Onion-Peeling Algorithm
Description
Abstract With the growing popularity of the velocity map imaging technique, a need for the analysis of photoion and photoelectron images arose. Here, a computer program is presented that allows for the analysis of cylindrically symmetric images. It permits the inversion of the projection of the 3D charged particle distribution using the Onion Peeling Algorithm. Further analysis includes the determination of radial and angular distributions, from which velocity distributions and spatial anisotropy para... Title of program: Glass Onion Catalogue Id: ADRY_v1_0 Nature of problem Information about velocity and angular distributions of photofragments is the basis on which the analysis of the photolysis process resides. Reconstructing the three-dimensional distribution from the photofragment image is the first step, further processing involving angular and radial integration of the inverted image to obtain velocity and angular distributions. Provisions have to be made to correct for slight distortions of the image, and to verify the accuracy of the analysis process. Versions of this program held in the CPC repository in Mendeley Data ADRY_v1_0; Glass Onion; 10.1016/S0010-4655(03)00277-7 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)