Reference Input Parameter Library (RIPL3)
Nuclear Data Sheets  Volume 110, Issue 12, December 2009, Pages 31073214
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 nuclearmodel input parameters, referred to as the Reference Input Parameter Library (RIPL). A final RIPL coordinated research project (RIPL3) was brought to a successful conclusion in December 2008, after 15 years of challenging work carried out through three consecutive IAEA projects. The RIPL3 library was released in January 2009, and is available on the Web through http://wwwnds.iaea.org/RIPL3/. 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 RIPL3 are arranged in seven segments: MASSES contains groundstate 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 γray 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 singleparticle 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 gammaray strength functions and methods for calculating gamma emission in statistical model codes. The experimental GDR parameters are represented by Lorentzian fits to the photoabsorption cross sections for 102 nuclides ranging from ^{51}V to ^{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.
Experimental mass excessesExperimental mass excesses evaluated by Audi and Wapstra^{[1]} are included along with the FRDM and HFB14 results below. References: FRDMGround state properties calculated within the Finite Range Droplet Model (FRDM)^{[13]}. References: Data File (762kB) README File (3.3kB) HFB14Ground state properties calculated within the HartreeFockBogoliubov (HFB) method^{[12]}. References: Data File (963kB) README File (4.3kB) DufloZuker96FORTRAN code for estimating nuclear masses with the 10 parameter formula of J. Duflo and A.P. Zuker^{[1,2]}. References: Code (12kB) README File (1.6kB) Natural AbundancesReformatted data from the Nuclear Wallet cards, as retrieved from Brookhaven National Laboratory^{[1]}. References: 
Retrieval of Mass Excesses


Nuclear Matter Densities  HFB14Neutron and proton distributions predicted within the HartreeFockBogolubov (HFB) method based on the BSk2 Skyrme force^{[13]}. References: 
Retrieval of Nuclear


Nuclear Matter Densities  D1SPredictions of the deformed density distribution obtained within the HartreeFockBogoliubov method with the D1S Gogny effective interaction^{[12]}. References: 
Retrieval of Nuclear

Discrete Levels and Decay DataCompilation of nuclear level schemes extracted from the ENSDF (CDROM in the Table of Isotopes  version 1998). Missing spins were inferred uniquely from spin distributions constructed using the available spins up to the highest known level. Missing Internal Conversion Coefficients (ICC) were calculated using inferred or available spins. Decays other than electromagnetic are given if available. 
Retrieval of Discrete LevelsDiscrete Levels

Cumulative Plot 
Level Parameters (analysis of level schemes)Cutoff energies (U_{max}) for completeness of level schemes and completeness of spins (U_{c}) for a given level scheme as determined from the constant temperature fit of nuclear levels. Parameters for calculation of nuclear level densities (nuclear temperature, 'backshift' and spin cutoff) and some additional parameters are also given. 
Retrieval of Level Parameters 
Average Spacings of Neutron Resonances296 average spacings for swave neutron resonances and 82 average spacings for pwave neutron resonances. References:
Data File with swave Resonances (22kB) 
Retrieval of Average Spacings

Data required for preparing inputs for optical model calculations and, in addition, one FORTRAN code for microscopic calculation of optical model parameters. See README File (2.9kB) for further information.
Phenomenological OMP LibraryThe library contains all phenomenological optical model potentials that have been compiled, with a Users File that is a subset of the archival file with all singleenergy potentials removed and an index file. See also the References.
Index of Users File ordered by Lib. No. (42kB) 
Retrieval of OMP Index 
Retrieval of OMP Data 

Deformation ParametersRecommended deformation parameters (beta2 and beta3) for 1643 collective levels retrieved from the JENDL3.2 evaluations, ENSDF and the literature^{[13]}. References: 
Retrieval of Deformation Parameters 
Utility Codes for Optical Model ParametersFORTRAN codes for updating, indexing and sorting the RIPL3 optical model parameter library.
Code (654kB)
README File (3.2kB) Code for Retrieving Optical Model PotentialsFORTRAN code and associated files that can be used to prepare inputs for the SCAT2000, ECIS and OPTMAN optical model codes using the RIPL3 OMP libraries. The code can also be used to tabulate parameters in function of incident energy. 
Code MOMFORTRAN code from BruyeresleChatel for semimicroscopic calculation of nucleonnucleus spherical optical model potential by folding the target radial matter density with an OMP in nuclear matter based on the BruecknerHartreeFock work of Jeukenne, Lejeune and Mahaux. 
BackShifted Fermi Gas Model (BSFG)Level density parameters for the BSFG model obtained by fitting the Fermigas model formula to the recommended spacings of swave neutron resonances and to the cumulative number of lowlying levels. Data File (34.3kB) README File (2.2kB) GilbertCameron ModelLevel density parameters for the GilbertCameron model obtained by fitting the Fermigas model formula to the recommended spacings of swave neutron resonances and by matching the corresponding level density to discrete levels. Data File (42.8kB) README File (2.4kB) Enhanced Generalized Superfluid Model (EGSM)Level density parameters for the Enhanced Generalized Superfluid Model (EGSM), which takes into account collective enhancement of the nuclear level density in addition to shell and superfluid effects. The parameters were obtained by fitting the corresponding model formulas to the recommended spacings of swave neutron resonances and by matching level densities to discrete levels.
Data File (26.1kB)
README File (2.4kB) 
Retrieval of Total Level Density ParametersPlot of Total Level Density


HFB Total Level DensitiesThe files contains the HFB plus combinatorial nuclear level densities at ground state deformations^{[1]}. The nuclear level density is coherently obtained on the basis of the singleparticle level scheme and pairing energy derived at the saddle point deformation or shape isomer deformation. The same BSk14 Skyrme force^{[2]} is used to estimate the fission saddle and isomeric points. References: 
Retrieval of HFB


Shell Correction prescriptionsShell corrections calculated with the MyersSwiatecki mass formula^{[1]}. References:
Data File (280kB)
README File (2.1kB) Shell corrections calculated with the MengoniNakajima mass formula^{[1]}. References: 
Retrieval of Level Densities

Experimental Giant Dipole Resonance (GDR) ParametersThe values and errors of giant dipole resonance (GDR) parameters are presented which were obtained by a fit of the theoretical photoabsorption cross sections to the experimental data for 121 nuclides from 12C through 239Pu. The values and errors of the shape parameters of the Lorentzianlike curves corresponding to the giant dipole resonance excitation are presented.^{[18]} References
README File (16kB) Theoretical GDR ParametersPredictions of the GDR energies and widths using GoldhaberTeller model for about 6000 nuclei with 14<=Z<=110 lying between the proton and the neutron driplines. 
Retrieval of GDR Parameters 

Microscopic E1 Photoabsorption StrengthFunctionsPredictions of the E1strength functions for 3317 nuclei with 8<=Z<=84 lying between the proton and the neutron driplines. The E1strength functions are determined within the QRPA model based on the SLy4 Skyrme force^{[1,2]}. References 
Retrieval of Microscopic E1


Empirical Fission BarriersThe file contains doublehumped fission barrier parameters, i.e inner and outer barrier height and width. The pairing correlation function required to estimate the nuclear level density at the fission saddle points is also given^{[1]}. References: Data File (3.8kB) README File (1.5kB) HFB Fission BarriersThe file contains the HFB fission barrier parameters and renormalization factors of the microscopic nuclear level density (NLD) obtained by fitting the neutroninduced fission cross section^{[1]}. The HFB fission path^{[2]} have been used initially and both the inner and outer barrier heights adjusted independently. For the lightest actinides (Th,Pa,U) three barriers are estimated. The barrier width is either the one predicted by the HFB model or for the some Th, Pa, Am or Cm cases the value adjusted to optimize the fission cross section. As far as the NLD are concerned, the HFB plus combinatorial model^{[3]} is used at each fission saddle points. In some cases, the NLD have been renormalized through the alpha and delta parameter (see TecDoc) to optimize the fit to the fission cross section. The corresponding alpha and delta values are also given in the present file. References:
Data File (3.5kB)
README File (2.6kB) Code for Liquid Drop Fission BarriersSubroutine can return the barrier height, the groundstate energy and the angular momentum at which the fission barrier disappears. References: 
Retrieval of Fission Barriers 

Level Densities at Saddle Points Calculated within HFBThe files contains the HFB plus combinatorial nuclear level densities at saddle and isomer deformations^{[1]}. The nuclear level density is coherently obtained on the basis of the singleparticle level scheme and pairing energy derived at the saddle point deformation or shape isomer deformation. The same BSk14 Skyrme force^{[2]} is used to estimate the fission saddle and isomeric points. References: 
Retrieval of Level Densities at Saddle Points 
SCAT2000O. BersillonCEA, DAM, DIF F91297 Arpajon, France Content ReadMe File 
OPTMANE.Sh. SoukhovitskiiJoint Institute for Power and Nuclear Research Sosny, BY220109 Minsk, Belarus Content ReadMe File 
ECISJ. RaynalService de Physique Theorique CEN Saclay 91191 GifsurYvette Cedex, France Content ReadMe File 
PFNS  Los Alamos ModelP. TalouLos Alamos National Laboratory Los Alamos, NM 87544, USA R. Capote Noy NAPCNuclear Data Section  IAEA A1400 Vienna, Austria Content ReadMe File 
R. Capote Noy NAPCNuclear Data Section International Atomic Energy Agency A1400 Vienna, Austria Email: r.capotenoy@iaea.org 
M. Herman National Nuclear Data Center Brookhaven National Laboratory Upton, NY 11973, USA Email: mwherman@bnl.gov 
P. Oblozinsky National Nuclear Data Center Brookhaven National Laboratory Upton, NY 11973, USA Email: oblozinsky@bnl.gov 
P.G. Young Los Alamos National Laboratory Los Alamos NM 87544, USA Email: pgy@lanl.gov 
S. Goriely Universite Libre de Bruxelles BE 1050 Brussels Belgium Email: sgoriely@astro.ulb.ac.be 
T. Belgya Institute of Isotope and Surface Chemistry Chemical Research Center H1525 Budapest, Hungary Email: belgya@alpha0.iki.kfki.hu 
A.V. Ignatyuk Institute of Physics and Power Engineering 249033 Obninsk Russia Email: ignatyuk@ippe.obninsk.ru 
A.J. Koning Fuels Actinides and Isotopes NRG Nuclear Research and Consultance Group NL1755 Petten, The Netherlands Email: koning@nrgnl.com 
S. Hilaire CEA, DAM, DIF F91297 Arpajon France Email: stephane.hilaire@cea.fr 
V.A. Plujko Taras Shevchenko National University 03022 Kiev Ukraine Email: plujko@univ.kiev.ua 
M. Avrigeanu National Institute of Physics and Nuclear Engineering "Horia Hulubei" 077125 BucharestMagurele Romania Email: mavrig@ifin.nipne.ro 
O. Bersillon CEA, DAM, DIF F91297 Arpajon France Email: olivier.bersillon@cea.fr 
M.B. Chadwick Los Alamos National Laboratory Los Alamos NM 87544, USA Email: mbchadwick@lanl.gov 
T. Fukahori Japan Atomic Energy Agency Tokaimura, Nakagun, Ibarakiken 3191195 Japan Email: fukahori.tokio@jaea.go.jp 
Zhigang Ge China Institute of Atomic Energy Beijing 102413 China Email: gezg@ciae.ac.cn 
Yinlu Han China Institute of Atomic Energy Beijing 102413 China Email: hanyl@ciae.ac.cn 
S. Kailas Bhabha Atomic Research Center Trombay 400085 Mumbai, India Email: kailas@barc.gov.in 
J. Kopecky JUKO Research NL1817 Alkmaar The Netherlands Email: juko@wxs.nl 
V.M. Maslov Joint Institute for Power and Nuclear Research Sosny BY220109 Minsk, Belarus Email: maslov@sosny.basnet.by 
G. Reffo Ente Nuove Tecnologie Energia e Ambiente (ENEA) 40129 Bologna, Italy 
M. Sin Nuclear Physics Department Bucharest University 077125 BucharestMagurele, Romania Email: mihaela.sin@gmail.com 
E.Sh. Soukhovitskii Joint Institute for Power and Nuclear Research Sosny BY220109 Minsk, Belarus Email: esukhov@sosny.basnet.by 
P. Talou Los Alamos National Laboratory Los Alamos NM 87544, USA Email: talou@lanl.gov 