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Title: RIPL-Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations

Abstract

We describe the physics and data included in the Reference Input Parameter Library, which is devoted to input parameters needed in calculations of nuclear reactions and nuclear data evaluations. Advanced modelling codes require substantial numerical input, therefore the International Atomic Energy Agency (IAEA) has worked extensively since 1993 on a library of validated nuclear-model input parameters, referred to as the Reference Input Parameter Library (RIPL). A final RIPL coordinated research project (RIPL-3) was brought to a successful conclusion in December 2008, after 15 years of challenging work carried out through three consecutive IAEA projects. The RIPL-3 library was released in January 2009, and is available on the Web through http://www-nds.iaea.org/RIPL-3/. This work and the resulting database are extremely important to theoreticians involved in the development and use of nuclear reaction modelling (ALICE, EMPIRE, GNASH, UNF, TALYS) both for theoretical research and nuclear data evaluations. The numerical data and computer codes included in RIPL-3 are arranged in seven segments: MASSES contains ground-state properties of nuclei for about 9000 nuclei, including three theoretical predictions of masses and the evaluated experimental masses of Audi et al. (2003). DISCRETE LEVELS contains 117 datasets (one for each element) with all known level schemes, electromagnetic andmore » {gamma}-ray decay probabilities available from ENSDF in October 2007. NEUTRON RESONANCES contains average resonance parameters prepared on the basis of the evaluations performed by Ignatyuk and Mughabghab. OPTICAL MODEL contains 495 sets of phenomenological optical model parameters defined in a wide energy range. When there are insufficient experimental data, the evaluator has to resort to either global parameterizations or microscopic approaches. Radial density distributions to be used as input for microscopic calculations are stored in the MASSES segment. LEVEL DENSITIES contains phenomenological parameterizations based on the modified Fermi gas and superfluid models and microscopic calculations which are based on a realistic microscopic single-particle level scheme. Partial level densities formulae are also recommended. All tabulated total level densities are consistent with both the recommended average neutron resonance parameters and discrete levels. GAMMA contains parameters that quantify giant resonances, experimental gamma-ray strength functions and methods for calculating gamma emission in statistical model codes. The experimental GDR parameters are represented by Lorentzian fits to the photo-absorption cross sections for 102 nuclides ranging from {sup 51}V to {sup 239}Pu. FISSION includes global prescriptions for fission barriers and nuclear level densities at fission saddle points based on microscopic HFB calculations constrained by experimental fission cross sections.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; « less
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Nuclear Data Center
Sponsoring Org.:
USDOE SC OFFICE OF SCIENCE (SC)
OSTI Identifier:
1040265
Report Number(s):
BNL-90872-2009-JA
Journal ID: ISSN 0090-3752; NDTSBA; R&D Project: 05055; KB0301041; TRN: US1202372
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Nuclear Data Sheets
Additional Journal Information:
Journal Volume: 110; Journal Issue: 12; Journal ID: ISSN 0090-3752
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COMPUTER CODES; CROSS SECTIONS; DECAY; ENERGY LEVELS; ENERGY RANGE; FERMI GAS; FISSION; FISSION BARRIER; GIANT RESONANCE; IAEA; ISOTOPES; NEUTRONS; NUCLEAR REACTIONS; NUCLEI; NUMERICAL DATA; OPTICAL MODELS; PHYSICS; RESONANCE; STATISTICAL MODELS; STRENGTH FUNCTIONS; SUPERFLUID MODEL; national nuclear data center

Citation Formats

Capote, R, Herman, M, Capote, R, Herman, M, Oblozinsky, P, Young, P G, Goriely, S, Belgy, T, Ignatyuk, A V, Koning, A J, Hilaire, S, Pljko, V A, Avrigeanu, M, Bersillon, O, Chadwick, M B, Fukahori, T, Ge, Zhigang, Han, Yinl, Kailas, S, Kopecky, J, Maslov, V M, Reffo, G, Sin, M, Soukhovitskii, E Sh, and Talou, P. RIPL-Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations. United States: N. p., 2009. Web. doi:10.1016/j.nds.2009.10.004.
Capote, R, Herman, M, Capote, R, Herman, M, Oblozinsky, P, Young, P G, Goriely, S, Belgy, T, Ignatyuk, A V, Koning, A J, Hilaire, S, Pljko, V A, Avrigeanu, M, Bersillon, O, Chadwick, M B, Fukahori, T, Ge, Zhigang, Han, Yinl, Kailas, S, Kopecky, J, Maslov, V M, Reffo, G, Sin, M, Soukhovitskii, E Sh, & Talou, P. RIPL-Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations. United States. doi:10.1016/j.nds.2009.10.004.
Capote, R, Herman, M, Capote, R, Herman, M, Oblozinsky, P, Young, P G, Goriely, S, Belgy, T, Ignatyuk, A V, Koning, A J, Hilaire, S, Pljko, V A, Avrigeanu, M, Bersillon, O, Chadwick, M B, Fukahori, T, Ge, Zhigang, Han, Yinl, Kailas, S, Kopecky, J, Maslov, V M, Reffo, G, Sin, M, Soukhovitskii, E Sh, and Talou, P. Tue . "RIPL-Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations". United States. doi:10.1016/j.nds.2009.10.004.
@article{osti_1040265,
title = {RIPL-Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations},
author = {Capote, R and Herman, M and Capote, R and Herman, M and Oblozinsky, P and Young, P G and Goriely, S and Belgy, T and Ignatyuk, A V and Koning, A J and Hilaire, S and Pljko, V A and Avrigeanu, M and Bersillon, O and Chadwick, M B and Fukahori, T and Ge, Zhigang and Han, Yinl and Kailas, S and Kopecky, J and Maslov, V M and Reffo, G and Sin, M and Soukhovitskii, E Sh and Talou, P},
abstractNote = {We describe the physics and data included in the Reference Input Parameter Library, which is devoted to input parameters needed in calculations of nuclear reactions and nuclear data evaluations. Advanced modelling codes require substantial numerical input, therefore the International Atomic Energy Agency (IAEA) has worked extensively since 1993 on a library of validated nuclear-model input parameters, referred to as the Reference Input Parameter Library (RIPL). A final RIPL coordinated research project (RIPL-3) was brought to a successful conclusion in December 2008, after 15 years of challenging work carried out through three consecutive IAEA projects. The RIPL-3 library was released in January 2009, and is available on the Web through http://www-nds.iaea.org/RIPL-3/. This work and the resulting database are extremely important to theoreticians involved in the development and use of nuclear reaction modelling (ALICE, EMPIRE, GNASH, UNF, TALYS) both for theoretical research and nuclear data evaluations. The numerical data and computer codes included in RIPL-3 are arranged in seven segments: MASSES contains ground-state properties of nuclei for about 9000 nuclei, including three theoretical predictions of masses and the evaluated experimental masses of Audi et al. (2003). DISCRETE LEVELS contains 117 datasets (one for each element) with all known level schemes, electromagnetic and {gamma}-ray decay probabilities available from ENSDF in October 2007. NEUTRON RESONANCES contains average resonance parameters prepared on the basis of the evaluations performed by Ignatyuk and Mughabghab. OPTICAL MODEL contains 495 sets of phenomenological optical model parameters defined in a wide energy range. When there are insufficient experimental data, the evaluator has to resort to either global parameterizations or microscopic approaches. Radial density distributions to be used as input for microscopic calculations are stored in the MASSES segment. LEVEL DENSITIES contains phenomenological parameterizations based on the modified Fermi gas and superfluid models and microscopic calculations which are based on a realistic microscopic single-particle level scheme. Partial level densities formulae are also recommended. All tabulated total level densities are consistent with both the recommended average neutron resonance parameters and discrete levels. GAMMA contains parameters that quantify giant resonances, experimental gamma-ray strength functions and methods for calculating gamma emission in statistical model codes. The experimental GDR parameters are represented by Lorentzian fits to the photo-absorption cross sections for 102 nuclides ranging from {sup 51}V to {sup 239}Pu. FISSION includes global prescriptions for fission barriers and nuclear level densities at fission saddle points based on microscopic HFB calculations constrained by experimental fission cross sections.},
doi = {10.1016/j.nds.2009.10.004},
journal = {Nuclear Data Sheets},
issn = {0090-3752},
number = 12,
volume = 110,
place = {United States},
year = {2009},
month = {12}
}