Extension of the Empire Code to the Resonance Region Page: 3 of 6
This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
International Conference on Nuclear Data for Science and Technology 2007
DOI:
Extension of the EMPIRE Code to the Resonance Region
Young-Sik Chola, M. Herman2, S. F. Mughabghab2, P. Oblozinsky2, D. Rochman2 and Y. O. Lee
Nuclear Data Evaluation Lab., Korea Atomic Energy Research Institute, Daejeon 305-353, Korea
2National Nuclear Data Center, Brookhaven National Laboratory, Upton, NY, USA
Abstract. The preliminary version of a new module has been developed to be added to a nuclear reaction model
code EMPIRE to allow for an evaluation of neutron cross sections in a resonance region. It automates most of the
evaluation procedures and can be executed within EMPIRE or as a stand-alone program. The module includes a
graphic user interface (GUI) and a number of codes and scripts that read individual, as well as average, resonance
parameters from the Atlas of Neutron Resonances and other physical constants from RIPL-2, perform an analysis of
the available resonances, carry out statistical distributions, and compute cross sections in resolved and unresolved
resonance regions which are then compared with experimental data. The module also provides an ENDF-formatted
file for a resonance region and various plots allowing for a verification of the procedure. The formatted file can be
integrated later into the final ENDF-6 file as generated by the EMPIRE code. However, as a preliminary version,
extensive testing and further improvements are needed before this new capability can be incorporated into the
production version of EMPIRE.1 Introduction
Currently, the evaluation of cross sections in a resonance
region is accomplished by using the several different codes by
following a complex procedure. The resolved resonance
parameters for each nuclide are provided separately as a
computerized data file called BNL325.TXT and each code
requires one or more input files. Hence, there is a strong
possibility of causing a human error while conducting the
several stages involved in evaluation tasks.
The preliminary version of a new module has been developed
to be added to a nuclear reaction model code EMPIRE [1] to
allow for an easier evaluation of neutron cross sections in a
resonance region. Our fundamental design goal is to automate
most of the procedures involved in evaluation tasks. It is
designed such that it can be executed within EMPIRE or as a
stand-alone program. The module performs an analysis of the
available resonances, provides statistical distributions, and
computes cross sections in resolved and unresolved resonance
regions. The module also provides an ENDF-6 formatted file
[2] for a resonance region and various plots allowing for a
verification of the procedure. The formatted file can be
integrated later into the final ENDF-6 file as generated by the
EMPIRE code. In the present paper, use of the resonance
module and some sample cases are presented.
2 Architecture of the resonance module
The resonance module consists of a graphic user interface
(GUI) and a number of codes such as SCANR, PTANAL [3],
WRIURR [3], RECENT [4] and SIGMA1 [5] and scripts that
read resonance parameters and other physical constants,perform an analysis of the available resonances, provide
statistical distributions and compute cross sections in resolved
and unresolved resonance regions which are then compared
with the available evaluated cross sections and experimental
data.File View
Main\ \ \
Input:
ZA: 28060 MAT: 1SF:
"Gg:
":s-wave
317e-04
11560 00
1253""Resolved region
Emax : 451540
Gn cut:
Unresolved region
a l.d.p.: 10
Emax 1332520Help
Reload
p-wave d-wave
510e-05 1 1ie-04
63000 91000
spin cut-off: 3
R' : 670
Gnl cut:
gPower : 25
energies: 30* Energy dependent D and neutron width for s-wave
Energy dependent D and gamma width for p-wave
Energy dependent D and gamma width for d-waveOutput:
ENDF
Cumulative plot
Porter-Thomas analysis
Total ENDFIH-VII
Scattering JENDL-3.3
Capture JEFF-3.1
Resonance parameters
Atlas of Neutron Resonances
* All
* PTANAL
E WRIURT
* RECENT
RunFig. 1. The screen shot of GUI main control panel.
At a start-up, the module reads all the necessary data for the
target nucleus including individual, as well as average,
resonance parameters from the Atlas of Neutron Resonances
[6] and other physical constants from RIPL-2 [7] and displays
them on the screen. The evaluator has the possibility toa Presenting author, e-mail: yscho@kaeri.re.kr
Upcoming Pages
Here’s what’s next.
Search Inside
This article can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Article.
Cho, Y. S.; Herman, M.; Mughabghab, S. F.; Oblozinsky, P.; Rochman, D. & Lee, Y. O. Extension of the Empire Code to the Resonance Region, article, April 22, 2007; United States. (https://digital.library.unt.edu/ark:/67531/metadc888037/m1/3/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.