Programs in Physics & Physical Chemistry
|[Licence| Download | New Version Template] aeyp_v1_0.tar.gz(84 Kbytes)|
|Manuscript Title: An R-matrix package for coupled-channel problems in nuclear physics|
|Authors: P. Descouvemont|
|Program title: rmatrix|
|Catalogue identifier: AEYP_v1_0|
Distribution format: tar.gz
|Journal reference: Comput. Phys. Commun. 200(2016)199|
|Programming language: Fortran 90.|
|RAM: Memory usage strongly depends on the nature of the problem (number of channels, size of the basis).|
|Keywords: Scattering theory, R-matrix method, Lagrange meshes, Coupled-channel problems.|
External routines: If available, the LAPACK library can be used for matrix inversion (faster than the sub-routine included in the package).
Nature of problem:
Solving coupled-channel problems for positive energies; the package provides the collision matrix and the associated wave function for given energy, spin and parity.
The coupled-channel system is solved with the R-matrix method, and Lagrange functions are adopted. Propagation of the R-matrix can be performed.
For non-local potentials, the propagation technique cannot be used.
strongly depends on the nature of the problem. For single-channel calculations, the running type is typically less than 1 s. For large scale calculations (typically more than 100 channels), the running time may increase up to several minutes on a multi-CPU Linux machine.
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