July 24, 2000: several bugs have been
corrected. See download page for details
Astrophysica for Windows performs calculations for
- Rate calculations
Non-resonant rates can be calculated from the
corresponding S factors. S-factors are given either from a data file, or
from calculated values (R-matrix or potential model- see below).
are calculated from resonance data. Tail contributions are taken into
The reaction rates
are provided in a tabular form, with analytical approximations. They can be
compared with the Caltech or NACRE results.
- R-matrix calculations
Capture cross sections can
be calculated within the R-matrix formalism. Input data are observed values,
which correspond to experimental data. The link between observed and
calculated parameters is performed as explaind in Ref. (C. Angulo and P.
Descouvemont, Phys. Rev. C60,...,2000). External contribution is taken into
The program performs fits of the data starting from approximate
results can be used to compute the reaction rate.
- Potential model
Woods-Saxon or Gaussian potentials can be used.
Final results can be used to compute the reaction rate.
- Downloading data files from the NACRE server
you have an Internet connection, S-factor files can be downloaded from the
NACRE server (http://pntpm3.ulb.ac.be/nacre.htm).
These data can be saved for further use, to compute reaction rates or to
perform R-matrix fits. Experimental S-factors for about 80 reactions are
Please report any comment, bug, problem
suggestion, etc... to
Université Libre de
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