Programs in Physics & Physical Chemistry
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|Manuscript Title: The UCL distorted wave code.|
|Authors: W. Eissner|
|Program title: UCLDW|
|Catalogue identifier: ADJG_v1_0|
Distribution format: tar.gz
|Journal reference: Comput. Phys. Commun. 114(1998)295|
|Programming language: Fortran.|
|Operating system: UNIX.|
|Keywords: Electron-atom collisions, Electron-ion, Collisions, Distorted wave method, Atomic physics.|
Nature of problem:
Collision strengths for electron-impact excitation of neutral atoms and positive ions are computed in the distorted wave approximation (DW) ; K matrix output is readily processed by JAJOM , yielding collision strengths between finestructure levels.
Partial wave approach in LS coupling with multi-configurational single particle product functions for the target: collisional radial functions are solutions in a statistical model potential; methods introduced in the structure code SUPERSTRUCTRE  are extended to DW - Slater State techniques and numerical propagation.
None worth mentioning before relativistic effects incidentally swamp the processes.
Needs preprocessing by the UCL macro-processor (Fortran 66 code comes with the source codes).
From a few minutes (9.92 cpu-seconds on a CRAY-j90 for the small test of a CIII 6-state target up to total L=10 at 3 collision energies) to several hours.
|||W. Eissner and M.J. Seaton: J. Phys. B 5 (1972) 2187.|
|||H.E. Saraph: Comput. Phys. Commun. 15 (1978) 247.|
|||W. Eissner, M. Jones and H. Nussbaumer: Comput. Phys. Commun. 8 (1974) 270.|
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