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TALYS

TALYS is a software package for the simulation of nuclear reactions below 200 MeV. TALYS is based on state-of-art nuclear structure and reaction models.

Documentation and reference

A description of the code and its options can be found in the TALYS Tutorial (pdf). The reference to be used for TALYS is

Arjan Koning, Stephane Hilaire and Stephane Goriely, TALYS: modeling of nuclear reactions, European Journal of Physics A59 (6), 131 (2023).

Installation

Prerequisites:

The following are the prerequisites for compiling TALYS:

git (only if the package is downloaded via Github)
a recent Fortran compiler such as gcc (gfortran)

Downloads:

To download TALYS, you can use one of the following options:

1. Download the entire tar file for the latest stable release:

https://nds.iaea.org/talys/talys.tar
tar zxf talys.tar

2. Using git for the latest development version:

git clone https://github.com/arjankoning1/talys.git

The TALYS structure database and sample cases do not fall under the git repository. Hence, to get a working system you need to download

https://nds.iaea.org/talys/misc/structure.tar
https://nds.iaea.org/talys/samples/talys_samples.tar

and after

tar zxf structure.tar
tar zxf talys_samples.tar

you should move both structure/ and samples/ inside the talys/ directory.

Installation instructions :

To install TALYS, you can use one of the following options:

1. Using make:

cd talys/source
make

2. Using the code_build script:

cd talys
code_build talys

The above will produce a talys executable in the talys/bin directory. The compiler and its flags can be set in either source/Makefile or in code_build.

Memory restrictions:

For computers with (very) small RAM, or for installation on Windows, the total allocated memory may be too large. In that case, edit A0_talys_mod.f90 in the source directory and reduce the value of the memorypar variable.

The TALYS package

The talys/ directory contains the following directories and files:

README.md this README file
LICENSE the License file
code_build and path_change installation scripts
source/ the Fortran source code of TALYS and the Makefile
bin/ the talys executable after successful installation
structure/ the nuclear structure and reaction database in various subdirectories
misc/ miscellaneous files such as a gnuplot script to plot TALYS results versus EXFOR data
doc/ the tutorial in pdf format
samples/ the input and output files of the sample cases, and the verify script to run the sample cases

In total, you will need about 8 Gb of free disk space to install TALYS.

Sample cases

The sample cases serve to provide examples of the use of TALYS and to verify a successful installation. The samples/ directory contains various sample cases with a subdirectory org/ with our results and a subdirectory new/ with the results produced by the user. The entire sample set will take about 1 hour.

cd samples
./verify

You may create your own input file, e.g. talys.inp after which TALYS works as follows:

talys < talys.inp > talys.out

assuming that talys is linked to the talys/bin/talys executable.

Plotting

The cross sections that TALYS calculates can be compared with experimental data from the EXFOR database using the misc/tplot script. For this, the EXFORTABLES database needs to be installed in your home directory. Type 'misc/tplot' to get all the options for this plotting command. 'tplot' needs to be called from your working directory, i.e. the TALYS output files need to be present.