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Manuscript Title: KAPSIES: a program for the calculation of multi-step direct reaction cross sections.
Authors: A.J. Koning, J.M. Akkermans
Program title: KAPSIES
Catalogue identifier: ACVZ_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 85(1995)110
Programming language: Fortran.
Computer: DEC-AXP.
Operating system: UNIX.
Keywords: Nuclear physics, Direct reaction, Pre-equilibrium nuclear Reactions, Multi-step direct, Continuum cross sections.
Classification: 17.11.

Nature of problem:
Multi-step direct (MSD) reaction theories provide a quantum-mechanical description of the intermediate, pre-equilibrium region between direct and compound nuclear reactions. Without exception, these theories are based on an extension of (discrete state) direct reaction concepts to the continuum part of the nuclear level scheme, where the high level density of the residual nucleus necessitates statistical postulates in order to obtain computationally tractable formulae for the analysis of these processes.

Solution method:
Multi-step direct cross sections and analyzing powers are calculated according to three different MSD models [2]. This is done by processing standard DWBA cross sections into energy averaged continuum cross sections according to different statistical prescriptions.

The present program can be used for nucleon inelastic scattering with incident energies between 10 and at least 200 MeV.

Running time:
About 1-5 minutes for a total run

[1] NEA Data Bank, OECD/Nuclear Energy Agency, 12 boulevard des Iles, 92130 Issy les Moulineaux, France.
[2] A.J. Koning and J.M. Akkermans, Phys. Rev. C 47 (1993) 724.