Dispersion relations in the nuclear optical model. J.M. Quesada, R. Capote, A. Molina, M. Lozano.

PROGRAM SUMMARY
Title of program: DOM
Catalogue identifier: ADRO
Ref. in CPC: 153(2003)97
Distribution format: zip file
Operating system: COMPAQ-DIGITAL UNIX, Microsoft WINDOWS, LINUX
High speed store required: 250K words
Number of bits in a word: 32
Number of lines in distributed program, including test data, etc: 704
Keywords: Optical model, Dispersion relations, Real and imaginary potentials, Nuclear physics.
Programming language used: Fortran
Computer: PCs (Pentium class) ,

Nature of physical problem:
Nuclear, Universidad de Sevilla, Spain An analytical solution of dispersion integral relations, linking the real and imaginary part of the nuclear OMP, has been derived for the most common functional forms. The general numerical solution is also presented.

Method of solution:
The decomposition of the integrand function using the analytical properties has been used to calculate the dispersive integral in the complex plane. The numerical solution is based on Gauss-Legendre quadrature formulae.

Restrictions:
None. If the dispersive integral of the imaginary potential does not have an analytical solution, the general numerical solution can be used.

Typical running time: