VisRes: A GRACE tool for displaying and analysing resonances

Published: 01-11-1998| Version 1 | DOI: 10.17632/h5gk5ntwj5.1
D.W. Busby,
P.G. Burke,
V.M. Burke,
C.J. Noble,
N.S. Scott


Abstract VisRes is a graphical tool for displaying and analysing resonance data. Files of eigenphase sums, generated during the computation of electron and photon interactions with atoms and molecules, can be read and the data displayed both as continuous and discontinuous graphs. Resonance resolution can be improved by interactively computing additional data points and merging them with the displayed data. Resonance positions and widths are determined by fitting user selected data points by the Breit... Title of program: VisRes 2.00 Catalogue Id: ADJE_v1_0 Nature of problem Electron and photon collisions with atoms and molecules give rise to quasi-bound states with long lifetimes. These resonances are exhibited in theoretical computations by a rapid increase in the eigenphase sum of approximately pi radians. VisRes is a graphical tool designed to enable the user to read files of eigenphase sums, to detect resonances, and to determine accurately their positions and widths. Versions of this program held in the CPC repository in Mendeley Data ADJE_v1_0; VisRes 2.00; 10.1016/S0010-4655(98)00067-8 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)