Scientific Computing, Numerics, Codes, Tools

If you are interested in calculations in any of these models, please contact me and I will be happy to do the calculations for you or to think about a possible collaboration.

Please choose from the navigation bar on the left or browse down. For further details and scientific results obtained with these nuclear reaction or astrophysics (including hydrodynamics) codes you are kindly referred to my publication list.




  1. Nuclear Reaction Codes

    Nuclear reactions can proceed via different reaction mechanisms. So far, I have worked on direct reactions and compound nucleus reactions. There are five codes to work with:
    • Statistical model codes (Hauser-Feshbach model):
    • Direct Reactions:
      • TEDCA (calculations can be provided on request; web interface planned)
      • TETRA (calculations can be provided on request)
    • Combined codes (multireaction mechanisms):
      • SMARAGD (future versions; under active development)
    I also have a variety of smaller codes (like parametrized nuclear reaction networks) for different purposes.

    NON-SMOKER

    This is a statistical model (Hauser-Feshbach theory) code based on the code SMOKER by Thielemann et al. It describes compound nucleus reactions by averaging over resonances. There is an on-line fast access database (with HTML and Java interfaces) containing all calculations and further references.

    NON-SMOKERweb

    This code is derived from the NON-SMOKER code but includes different physics and additional options. It can be run directly over the web. The speciality of NON-SMOKERweb is that it can be completely controlled through a nice web UI which even allows to introduce new functions describing certain nuclear properties (e.g. optical potentials) without recompilation of the code!

    TEDCA

    This is a code to calculate direct radiative capture reactions with neutral or charged particles. Different optical potentials (including Saxon-Woods and folding potentials) are built in, arbitrary potentials or wave functions can be supplied as input. Electromagnetic transitions considered are E1, E2, M1. Results obtained with this code have been published in various journal articles.

    TETRA

    This is a DWBA (Distorted Wave Born Approximation) code to calculate direct transfer reactions in the zero-range or finite-range approximation. Different optical potentials (including Saxon-Woods and folding potentials) are built in, arbitrary potentials or wave functions can be supplied as input. Results obtained with this code have been published in various journal articles.

  2. Astrophysics codes

    Hydrodynamics

    Modelling stellar evolution and explosive astrophysical events (supernovae, X-ray bursters) requires sophisticated hydrodynamics codes. Our group is making use of several different codes for different applications, partly developed or extended by ourselves. Among the codes are AGILE (general relativistic; Liebendörfer), KEPLER (1-D multizone hydro code; Woosley), TYCHO (quiescent stellar burning, also 1-D; Arnett), and a smoothed particle hydrodynamics (SPH) code (Benz, Rosswog).

    Reaction Networks

    I also have a variety of parameterized reaction network codes for different purposes: using full networks or equilibrium conditions. Those codes are used for studying primordial nucleosynthesis, explosive burning phases of stars, the r-, s-, p-, and rp-processes. Such codes are also implemented into the hydrodynamics stellar evolution codes in order to follow nucleosynthesis in detail.

  3. General utilities

    • Calculation of astrophysical reaction rates from experimental data including error bars: exp2rate [FORTRAN90/95]
    • Data interpolation: interpolate [FORTRAN90/95]
    • Calculation of folding integrals (with special emphasis on experimental data evaluation with Maxwell-Boltzmann distributions): MBinteg V1.3 [Windows 2000/NT/XP]
    • Conversion of Maxwellian Averaged Cross Sections (MACS) to astrophysical reaction rates and vice versa: macs2rat, rat2macs [C]
    • Utility package for using NON-SMOKERweb (including the checker tool): available on request [C] (checker is available here)
space filler
© Dr. Thomas Rauscher (email), last change 2011-Jul-12