GEF 2015/2.2
General
description of fission observables. Released September 24, 2015.
Last modifications: Overflow problem for very large event numbers solved (November 26, 2015).
Overflow problem in utilities.bi corrected (April 11, 2016), thanks to K. Kern.
Subscriptrange problem in output corrected (April 29, 2016), thanks to V. Tobosaru.
Prompt-neutron spectrum with variable binsize added in folder "/out" (May 29, 2016).
Prompt-gamma spectrum with conditions on fragment mass and with variable binsize added in folder "/dmp/EgammaA" (June 1, 2016).
Accumulation of prompt-neutron spectrum with variable bin size corrected (July 2, 2016)
GEFSUB: Technical correction that speeds up the code (September 7, 2016), thanks to R. Reifarth.
- By the extensions implemented in GEF 2015/2.1, the quality of
the code at low excitation energy deteriorated. This has been
essentially recovered by a new adjustement of the parameters in GEF
2015/2.2.
GEF 2015/2.1 should not be used any more.
Most important developments for GEF 2015/2.1 that are still present in GEF 2015/2.2:
- Improved description of the contributions of the different fission chances
- Influence of excitation energy
- Influence of angular momentum
- Improved description of fragment distributions for fission from high excitation energies
- Influence of angular momentum on fission-fragment mass distributions
- Improved description of fission-fragment distributions for light nuclei (Z=76 to Z=90)
- Tentative description of the double-humped structure for nuclei around Z=80 (e.g. 180Hg, 201Tl)
- Energies of non-statistical prompt gammas described with a new VMI model
We
are happy about any feed-back (mail to
schmidt-erzhausen<at>t_online.de). This helps to correct errors,
to improve the quality of the model and to better respond to the needs
and preferences of the users.
Use of the GEF code is subject to the GNU GENERAL PUBLIC LICENSE agreement that you find here: <License>.
Stand-alone version (Monte-Carlo method)
The
stand-alone version of the GEF code is written in FreeBASIC (a). The
FreeBASIC compiler produces binary code from the same source on Windows
(b) and on Linux. The executable uses the C library. For
the Windows
version, a GUI is provided, written in JustBasic (c). The Windows
version runs also on Linux with Wine (d).
Quick start on Windows:
- Download the binaries
(that includes some additional files).
- Start GEF.bat in a
command window.
- Fill in the input mask of the graphical user interface and start
the calculation.
- Output is written to file \out\...
.dat.
Quick start on Linux:
- Download the binaries.
- Make sure that the binary file GEF is executable.
- Enter ./GEF in a command
window.
- Answer the input dialogue.
- Output is written to file
/out/... .dat.
Windows version
Input mask of the graphical user interface:
For Windows and Linux
Complete
package
Documentation
Readme file
(Technical information, list of relevant publications)
JEFF-Report 24, part I
(Comprehensive documentation of the GEF model.)
JEFF-Report 24, part II
(Technical information on the GEF code.)
Source (for Windows and Linux)
Source
files
Data
Input files for extended input options
Distribution of entrance energies (example)
List of input parameters (example)
See Readme file
for more detailed information.
Output
Data tables in XML format (example)
List-mode file (example) (short sample of most complete event list)
Raw data for the multi-variate distribution of fission-fragment yields
from calculations with perturbed parameters (example)
See Readme file
for more detailed information.
You
may consider using the Windows version of GEF on Linux with Wine in
order to profit from the more comfortable input handling offered by the
graphical user interface. This option may also solve problems of
missing libraries under Linux.
Subroutine (Folding method)
The subroutine aims for being used
in combination with other nuclear-reaction codes. For a given
fissioning nucleus with excitation energy E* and angular momentum I
it calculates complete distributions of a number of fission observables
before emission of prompt neutrons and prompt gamma radiation with the
GEF model.
Documentation
Technical description of the subroutine
FreeBASIC version
Source
FORTRAN version
Source
