Computer Physics Communications Program LibraryPrograms in Physics & Physical Chemistry |

[Licence| Download | New Version Template] adqa_v1_0.gz(4 Kbytes) | ||
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Manuscript Title: FGH, a code for the calculation of Coulomb radial wave functions from
series expansions. | ||

Authors: M.J. Seaton | ||

Program title: FGH | ||

Catalogue identifier: ADQA_v1_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 146(2002)250 | ||

Programming language: Fortran. | ||

Computer: DEC ALPHA 3000. | ||

Operating system: UNIX. | ||

RAM: 11M K words | ||

Word size: 64 | ||

Keywords: Coulomb functions, Series solutions, General purpose. | ||

Classification: 4.5. | ||

Other versions: | ||

Cat
Id | Title | Reference |

AAJJ_v1_0 | COULAN | CPC 25(1982)87 |

Nature of problem:Coulomb radial functions are required in problems involving interactions between two charged particles. They depend on the scaled variables: angular momentum l; energy epsilon; radial co-ordinate r. For sufficiently small values of r they can be calculated using power-series expansions. | ||

Solution method:The power series can involve excessive cancellation if r is not sufficiently small. The code gives an indication of the number of decimal figures which are lost due to cancellation effects [1]. | ||

Unusual features:A long word-length is recommended, 64 or 128 bits. | ||

Running time:0.06s | ||

References: | ||

[1] | M.J. Seaton, COmput. Phys. Commun. 146 (2002) 225. |

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