Programs in Physics & Physical Chemistry
|[Licence| Download | New Version Template] accw_v1_0.gz(52 Kbytes)|
|Manuscript Title: RESON: a program for the detection and fitting of Breit-Wigner resonances.|
|Authors: J. Tennyson, C.J. Noble|
|Program title: RESON|
|Catalogue identifier: ACCW_v1_0|
Distribution format: gz
|Journal reference: Comput. Phys. Commun. 33(1984)421|
|Programming language: Fortran.|
|Computer: NAS 7000.|
|Operating system: MVT.|
|RAM: 200K words|
|Word size: 8|
|Keywords: Electron, Fit, Scattering, Resonances, Breit-wigner form, Least squares fitting, General purpose.|
Nature of problem:
RESON detects resonances in a list of eigenphase sums and fits them to a Breit-Wigner form.
The resonances are detected by sign changes in the second derivative of the energy with respect to the eigenphase sum. A least squares fit is then performed in the region of the resonance.
RESON will only fit up to two overlapping resonances.
RESON uses NAG library minimisation routine EO4FDF. It can also generate requests for fitting points to give a fully automated resonance detection and fitting package.
0.2 secs per resonance on NAS 7000
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