Programs in Physics & Physical Chemistry
|[Licence| Download | New Version Template] adrn_v1_0.tar.gz(26 Kbytes)|
|Manuscript Title: A computer program for nuclear scattering at intermediate and high energies.|
|Authors: C.A. Bertulani, C.M. Campbell, T. Glasmacher|
|Program title: DWEIKO|
|Catalogue identifier: ADRN_v1_0|
Distribution format: tar.gz
|Journal reference: Comput. Phys. Commun. 152(2003)317|
|Programming language: Fortran.|
|Operating system: WINDOWS, UNIX.|
|RAM: 1M words|
|Word size: 64|
|Keywords: Elastic scattering, Coulomb excitation, Relativistic collisions, Coupled-channels, Nuclear excitation, Nuclear physics, Direct reaction.|
Nature of problem:
The program calculates elastic scattering differential cross sections, probabilities, and cross sections for inelastic scattering in nuclear collisions at intermediate and high energies (Elab >= 50 MeV/nucleon). It is particularly useful in the analysis of experiments with stable and unstable nuclear beams running at several intermediate-energy heavy ion accelerators around the world.
Eikonal wavefunctions are used for the scattering. For each "impact parameter" entering the scattering matrix elements, one solves coupled-channels equations for the time dependent Coulomb + nuclear field expanded into multipoles. A four-point Runge-Kutta procedure is used to solve the coupled-channels equations. The elastic scattering is calculated purely with the eikonal approximation. The coupled-channels is a separate calculation for the inelastic amplitudes. The inelastic couplings, therefore, have no effect on the obtained elastic scattering cross sections.
Almost all the CPU time is consumed by the solution of the coupled-channels equations. It is about 2 min on a 1GHz Intel P4-processor machine for the inclusion of 5 nuclear states.
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