Elsevier Science Home
Computer Physics Communications Program Library
Full text online from Science Direct
Programs in Physics & Physical Chemistry
CPC Home

[Licence| Download | New Version Template] abge_v1_0.gz(15 Kbytes)
Manuscript Title: Bound state solution of the two-nucleon Schroedinger equation with tensor forces.
Authors: L. Lovitch, S. Rosati
Program title: DEUT
Catalogue identifier: ABGE_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 2(1971)353
Programming language: Fortran.
Computer: IBM 7090.
Operating system: IBSYS VERSION 13, IBJOB VERSION 5.
RAM: 23K words
Word size: 36
Keywords: Nuclear physics, General purpose, Differential equation, Two nucleon, Neutron-photon, Schrodinger equation, Deuteron, Tensor forces, Wave functions, Electric quadrupole Moment, D-wave percentage, Shell model.
Classification: 4.3, 17.19.

Revision history:
Type Tit le Reference
adaptation 0001REMOVE NON-STANDARD FORTRAN See below

Nature of problem:
Subroutine DEUT is a Fortran IV subroutine designed to calculate the binding energy and wavefunction of the neutron-proton J=1+ bound state when the interaction between the particles is described by a given combination of central, tensor and spin-orbit potentials with or without a hard core. This subroutine may also be employed in nuclear Hartree-Fock calculations using an effective nucleon-nucleon potential containing a tensor component, and in all those eigenvalue problems reducible to that of a particle moving under the influence of a force containing a tensor component.

Solution method:
The requirements that the wavefunctions vanish at the origin and at infinity cause this to be an eigenvalue problem: the technique used for the solution involves a direct numerical integration of the differential equations with middle point matching, accompanied by the iterative application of a suitable correction formula for a trial value of the binding energy.

Restrictions:
The interparticle potentials considered in the program are the Hamada- Johnston potential and the Reid hard-core or soft-core potentials. To use subroutine DEUT in the case of some other potential one must simply re-write the subprogram POT.

Running time:
The test case requires 85 seconds to compile and 15 seconds to run on the IBM 7090 computer at Pisa University.

ADAPTATION SUMMARY
Manuscript Title: Bound state solution of the two-nucleon Schroedinger equation with tensor forces.
Authors: L. Lovitch, S. Rosati
Program title: 0001REMOVE NON-STANDARD FORTRAN
Catalogue identifier: ABGE_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 4(1972)140
Programming language: Fortran.
Computer: IBM 7090.
Classification: 4.3, 17.19.