Computer Physics Communications Program LibraryPrograms in Physics & Physical Chemistry |

[Licence| Download | New Version Template] abmq_v1_0.gz(8 Kbytes) | ||
---|---|---|

Manuscript Title: Quasi-bound state wavefunctions. | ||

Authors: R.M. DeVries | ||

Program title: QUASI-BOUND STATE WAVEFUNCTIONS | ||

Catalogue identifier: ABMQ_v1_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 11(1976)249 | ||

Programming language: Fortran. | ||

Computer: IBM 360/65. | ||

Operating system: OS MVT RELEASE 21.8. | ||

RAM: 175K words | ||

Word size: 64 | ||

Keywords: Nuclear physics, Unbound, Woods-saxon, Wavefunction, Schrodinger equation, Quasi-bound, Resonant state, Direct reaction, Shell model. | ||

Classification: 17.11, 17.19. | ||

Nature of problem:A program has been written which calculates the solution to the time independent Schrodinger equation for particles trapped by a Coulomb barrier but whose energy is greater than zero. | ||

Solution method:For fixed Woods-Saxon radius and diffuseness, the depth of the nuclear potential is iteratively found starting from a radius where the total potential energy exceeds the particle energy. Using this nuclear potential the quasi-bound wavefunction is generated from the boundary conditions at r = infinity of G(r)/r where G(r) is the irregular Coulomb wavefunction. | ||

Restrictions:The program is dimensioned for a maximum of 400 mesh points and a maximum angular momentum of 10. Both these limits are easily increased if desired. | ||

Unusual features:Because the solution is exactly on resonance no searching on the phase shift is required. Therefore this technique works even if the resonance widths are extremely narrow (10**-10 eV for example). | ||

Running time:For the test case (212 Po=208Pb + alpha), 7 s using the WATFIV compiler - this includes compilation time. |

Disclaimer | ScienceDirect | CPC Journal | CPC | QUB |