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  • Compilation and Evaluation of Beta-Delayed Neutron Emission Probabilities and Half-Lives for Z > 28 Precursors
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-09-22
    J. Liang; B. Singh; E.A. McCutchan; I. Dillmann; M. Birch; A.A. Sonzogni; X. Huang; M. Kang; J. Wang; G. Mukherjee; K. Banerjee; D. Abriola; A. Algora; A.A. Chen; T.D. Johnson; K. Miernik

    We present a compilation and evaluation of experimental β-delayed neutron emission probabilities (Pn) and half-lives (T1/2) for known or potential β-delayed neutron precursors with atomic number Z > 28 (73Cu–233Fr). This article includes the recommended values of both of these quantities, together with a compilation of experimental measurements when available. Some notable cases, as well as proposed

    更新日期:2020-09-22
  • Nuclear Data Sheets for A=212
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-09-22
    K. Auranen; E.A. McCutchan

    Spectroscopic data for all nuclei with mass number A=212 have been evaluated and the corresponding level schemes from radioactive decay and reaction studies are presented. Highlights from this evaluation include the first observation of 212Hg by 2010Al24 and the first measurement of the ground state half-life by 2012Be28 and 2016Ca25. The first measurement of the β− decay of 212Tl populating excited

    更新日期:2020-09-22
  • Nuclear radius parameters (r0) for even-even nuclei from alpha decay
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-08-17
    Sukhjeet Singh, Sushil Kumar, Balraj Singh, A.K. Jain

    The decay data for 186 even-even alpha emitters have been analyzed, and used as input in the ALPHAD code to extract nuclear radius parameters (r0) for the daughter nuclides. The ALPHAD code employs Preston's spin-independent formalism to calculate alpha decay probabilities. A suite of databases available at the website of the National Nuclear Data Center (NNDC), Brookhaven National Laboratory was consulted

    更新日期:2020-08-17
  • Enhancing nuclear data validation analysis by using machine learning
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-08-17
    D. Neudecker, M. Grosskopf, M. Herman, W. Haeck, P. Grechanuk, S. Vander Wiel, M.E. Rising, A.C. Kahler, N. Sly, P. Talou

    We demonstrate how machine learning (ML) techniques can be used as an auxiliary tool for nuclear data validation analysis. The output of the ML analysis can inform evaluators and validators on the quality, or lack thereof, of specific nuclear data and benchmark experiments with respect to simulating these experimental benchmark values. To this end, measured and simulated effective neutron multiplication

    更新日期:2020-08-17
  • Characterization of the neutron spectra in three irradiation channels of the JSI TRIGA reactor using the GRUPINT spectrum adjustment code
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-08-17
    V. Radulović, R. Jaćimović, A. Pungerčič, I. Vavtar, L. Snoj, A. Trkov

    Reference neutron fields in irradiation facilities are crucial for experimental research work in nuclear science and technology in general, and at the fundamental level for the measurement of neutron cross sections and validation of evaluated cross-section data. Monte Carlo particle transport techniques in conjunction with state-of-the-art nuclear data libraries are becoming the reference in the broad

    更新日期:2020-08-17
  • Calculations of astrophysical reaction rates using ENDF/B-VIII.0 library
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-08-17
    B. Pritychenko

    Recent observations of neutron stars merger (GW170817) renewed interest in stellar nucleosynthesis. Stellar nucleosynthesis modeling requires fully traceable, unbiased, high fidelity nuclear data. The Evaluated Nuclear Data File (ENDF) libraries contain complete collections of reaction data sets over the nuclear industry standard 10−5 eV - 20 MeV energy span. For the first time, the (n,γ), (n,fission)

    更新日期:2020-08-17
  • Nuclear Data Sheets for A=205
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-06-03
    F.G. Kondev

    Evaluated nuclear structure and decay data for all nuclei with mass number A=205 (Ir,Pt,Au,Hg,Tl,Pb,Bi, Po,At,Rn,Fr,Ra,Ac) are presented. The experimental data are compiled and evaluated, and best values for level and gamma-ray energies, quantum numbers, lifetimes, γ-ray intensities and transition probabilities, and other nuclear properties are recommended. The reported absolute γ-ray emission probabilities

    更新日期:2020-06-03
  • Nuclear Data Sheets for A = 90
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-04-28
    S.K. Basu, E.A. Mccutchan

    The experimental results from the various reaction and decay studies leading to nuclides in the A = 90 mass chain have been reviewed. These data are summarized and presented, together with the adopted level schemes and properties, for the nuclides from Ge(Z = 32) through Pd(Z = 46). This evaluation replaces the previous evaluation by E. Browne, which appeared in Nuclear Data Sheets 82, 379 (1998).

    更新日期:2020-04-28
  • Nuclear Data Sheets for A=98
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-03-03
    Jun Chen, Balraj Singh

    Experimental spectroscopic data on nuclear structure and decay are evaluated for known nuclides of mass 98 (Br, Kr, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In). Detailed evaluation results of individual reactions and decays are presented together with the Adopted values that are recommended for level properties, γ and β radiations, and other spectroscopic information. 98Mo remains as the most

    更新日期:2020-03-03
  • IRDFF-II: A New Neutron Metrology Library
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-01-27
    A. Trkov, P.J. Griffin, S.P. Simakov, L.R. Greenwood, K.I. Zolotarev, R. Capote, D.L. Aldama, V. Chechev, C. Destouches, A.C. Kahler, C. Konno, M. Koštál, M. Majerle, E. Malambu, M. Ohta, V.G. Pronyaev, V. Radulović, S. Sato, H. Yashima

    High quality nuclear data is the most fundamental underpinning for all neutron metrology applications. This paper describes the release of version II of the International Reactor Dosimetry and Fusion File (IRDFF-II) that contains a consistent set of nuclear data for fission and fusion neutron metrology applications up to 60 MeV neutron energy. The library is intended to support: a) applications in

    更新日期:2020-01-27
  • IAEA Photonuclear Data Library 2019
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-01-27
    T. Kawano, Y.S. Cho, P. Dimitriou, D. Filipescu, N. Iwamoto, V. Plujko, X. Tao, H. Utsunomiya, V. Varlamov, R. Xu, R. Capote, I. Gheorghe, O. Gorbachenko, Y.L. Jin, T. Renstrøm, M. Sin, K. Stopani, Y. Tian, M. Wiedeking

    Photo-induced reaction cross section data are of importance for a variety of current or emerging applications, such as radiation shielding design and radiation transport analyses, calculations of absorbed dose in the human body during radiotherapy, physics and technology of fission reactors (influence of photo-reactions on neutron balance) and fusion reactors (plasma diagnostics and shielding), activation

    更新日期:2020-01-27
  • A Statistical Analysis of Evaluated Neutron Resonances with TARES for JEFF-3.3, JENDL-4.0, ENDF/B-VIII.0 and TENDL-2019
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-01-27
    D. Rochman, A.J. Koning, J.-Ch. Sublet

    In this paper, a statistical analysis of resonance evaluations from the most recent nuclear data libraries is performed with the code TARES. A description of the TARES framework is provided, but also for its use in the production of resonance parameters for the entire TENDL library. Various observables are calculated (e.g., thermal cross sections, capture integrals but also D0 and other average resonance

    更新日期:2020-01-27
  • Unrecognized Sources of Uncertainties (USU) in Experimental Nuclear Data
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-01-27
    R. Capote, S. Badikov, A.D. Carlson, I. Duran, F. Gunsing, D. Neudecker, V.G. Pronyaev, P. Schillebeeckx, G. Schnabel, D.L. Smith, A. Wallner

    Evaluated nuclear data uncertainties reported in the literature or archived in data libraries are often perceived as unrealistic, most often because they are thought to be too small. The impact of this issue in applied nuclear science has been discussed widely in recent years. Commonly suggested causes are: poor estimates of specific error components, neglect of uncertainty correlations, and overlooked

    更新日期:2020-01-27
  • Applying a Template of Expected Uncertainties to Updating 239Pu(n,f) Cross-section Covariances in the Neutron Data Standards Database
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-01-27
    D. Neudecker, D.L. Smith, F. Tovesson, R. Capote, M.C. White, N.S. Bowden, L. Snyder, A.D. Carlson, R.J. Casperson, V. Pronyaev, S. Sangiorgio, K.T. Schmitt, B. Seilhan, N. Walsh, W. Younes

    Templates of uncertainties expected in specific measurement types were recently developed. One aim of these templates is to help evaluators in identifying (1) missing or suspiciously low uncertainties and (2) missing correlations between uncertainties of the same and different experiments, when estimating covariances for experimental data employed in their evaluations. These templates also provide

    更新日期:2020-01-27
  • Improved Cumulative Fission Yield Measurements with Fission Spectrum Neutrons on 238U
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-01-27
    B.D. Pierson, L.R. Greenwood, S.C. Stave, J.T. Burke, S.W. Padgett, A.M. Prinke, J.M. Goda, J.A. Bounds, D.K. Hayes, A.S. Tamashiro, R.S. Wittman, G. Slavik, M.P. Dion, J.G. Burch, T.S. Palmer

    Two isotopically-characterized targets of high-purity (99.961±0.002%) 238U metal and a neutron dosimetry package were exposed to a pulsed neutron irradiation using the Godiva IV critical assembly at the National Criticality Experiments Research Center to measure the integral fission product yields produced in a Watt fission neutron-energy spectrum. Following irradiation, the fissioned targets were

    更新日期:2020-01-27
  • Evaluation of the Prompt Fission Gamma Properties for Neutron Induced Fission of 235,238U and 239Pu
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-01-27
    I. Stetcu, M.B. Chadwick, T. Kawano, P. Talou, R. Capote, A. Trkov

    We present details of the prompt fission gamma property evaluations included in the released ENDF/B-VIII.0 files. The average prompt gamma multiplicity, the average prompt gamma spectrum, the average total prompt gamma energy released and the prompt gamma multiplicity distributions, included in the ENDF/B-VIII.0 files, are presented for 235U(n,f), 238U(n,f), and 239Pu(n,f) reactions, as a function

    更新日期:2020-01-27
  • Corrigendum to “Evaluation of the Neutron Data Standards” [Nucl. Data Sheets 148, p. 143 (2018)]
    Nucl. Data Sheets (IF 5.944) Pub Date : 2020-01-27
    A.D. Carlson, V.G. Pronyaev, R. Capote, G.M. Hale, Z.-P. Chen, I. Duran, F.-J. Hambsch, S. Kunieda, W. Mannhart, B. Marcinkevicius, R.O. Nelson, D. Neudecker, G. Noguere, M. Paris, S.P. Simakov, P. Schillebeeckx, D.L. Smith, X. Tao, W. Wang

    A corrected description of the interpolation scheme for the neutron data standards is given. It is emphasized that the energies (nodes) listed are where the evaluated cross sections are shown. A numerical example that shows how the high-resolution 235U(n,f) data should be averaged to be compared with lower resolution cross sections is given.

    更新日期:2020-01-27
  • Nuclear Data Sheets for A=105
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-12-09
    S. Lalkovski, J. Timar, Z. Elekes

    This work presents new evaluation of A=105 nuclear structure and decay data. It covers a range of nuclei from the very neutron-rich 10538Sr to the extremely neutron-deficient 10552Te, known also to be the doughter of the lightest alpha decaying nucleus 109I. The work is based on experimental studies performed in the last 73 years, where A=105 nuclei were produced in particle transfer, fusion/evaporation

    更新日期:2019-12-09
  • Nuclear Data Sheets for A=155
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-12-06
    N. Nica

    This work represents an update of the previous evaluation of the nuclear data on the A=155 nuclides (2005Re01). The experimental data from reaction and decay studies leading to the following nuclides have been reviewed: 155La, 155Ce, 155Pr, 155Nd, 155Pm, 155Sm, 155Eu, 155Gd, 155Tb, 155Dy, 155Ho, 155Er, 155Tm, 155Yb, 155Lu, 155Hf, and 155Ta. These data are presented, together with the adopted level

    更新日期:2019-12-06
  • Nuclear Data Sheets for A=218
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-12-06
    Balraj Singh, M.S. Basunia, Murray Martin, E.A. McCutchan, Indu Bala, R. Caballero-Folch, Rhiann Canavan, Ritwika Chakrabarti, A. Chekhovska, M.M. Grinder, Samra Kaim, Debasmita Kanjilal, D. Kasperovych, M.J. Kobra, H. Koura, Soumen Nandi, Adina Olacel, Abhilasha Singh, B.P.E. Tee

    The evaluated data are presented for 11 known A=218 nulcides (Pb, Bi, Po, At, Rn, Fr, Ra, Ac, Th, Pa and U). For 218Pb, 218Bi, 218At and 218Pa, data are available only for the ground states. For 218U, only the g.s. and a high-spin isomer are known, with no data on γ-ray transitions available. For 218Po, ten excited states are known from 218Bi decay, with no knowledge on the multipolarities of gamma-ray

    更新日期:2019-12-06
  • Nuclear Data Sheets for A=177
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-11-21
    F.G. Kondev

    Evaluated nuclear structure and decay data for all nuclei with mass number A=177 (Ho,Er,Tm,Yb,Lu,Hf,Ta,W,Re,Os,Ir,Pt,Au,Hg,Tl) are presented. The experimental data are compiled and evaluated, and best values for level and gamma-ray energies, quantum numbers, lifetimes, gamma-ray intensities and transition probabilities, and other nuclear properties are recommended. Inconsistencies and discrepancies

    更新日期:2019-11-21
  • Nuclear Data Sheets for A=73
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-07-12
    Balraj Singh, Jun Chen

    Experimental nuclear structure data for the known A=73 isobaric nuclides (Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Br, Kr, Rb and Sr) have been evaluated, and presented together with Adopted properties of level energies, and associated γ rays. The decay data for these nuclides have also been evaluated, providing Adopted values of γ and β radiations, and log ft values. For 73Mn, only the isotopic identification

    更新日期:2019-07-12
  • Nuclear Data Sheets for A=50
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-06-03
    Jun Chen, Balraj Singh

    The experimental nuclear structure and decay data are evaluated for all the known nuclides of mass 50 (Cl, Ar, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni). Detailed evaluated nuclear structure information are presented in individual decay and reaction datasets and the best values are recommended in the Adopted dataset for level properties, γ and β radiations, and other spectroscopic information. No excited

    更新日期:2019-06-03
  • Nuclear Data Sheets for A=82
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-06-03
    J.K. Tuli, E. Browne

    The evaluators present in this publication spectroscopic data and level schemes from radioactive decay and nuclear reactions studies for all isobars, Z=28(Ni) to Z=42(Mo), with mass number A=82. For 82Ni not much is known other than its identification. Most of the new data, i.e., after the last NDS (2003Tu03), are based on compilations included in XUNDL. Contributions of the various compilers in XUNDL

    更新日期:2019-06-03
  • Nuclear Data Sheets for A=254
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-04-16
    Balraj Singh

    Spectroscopic data for known A=254 nuclides (U, Cf, Es, Fm, Md, No, Lr and Rf) have been updated and re-evaluated, superseding the data presented in the previous evaluation 2005Bh12 published by A. Bhagwat, N.J. Thompson and J.K. Tuli. With the exception of the 254No nuclide, excited-state data for A=254 nuclei are largely unknown. The decay of the 184−μs isomer in 254No has been studied in two independent

    更新日期:2019-04-16
  • Nuclear Data Sheets for A=266,270,274,278,282,286,290,294,298
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-04-16
    Balraj Singh

    Spectroscopic information such as production, identification, half-lives, decay modes and possible excited states for experimentally known nuclides of mass numbers 266, 270, 274, 278, 282, 286, 290, 294, and 298 are presented together with the recommended values, superseding information and data in the previous ENSDF and NDS evaluation by 2005Gu33. No nuclides have yet been identified for A=302. In

    更新日期:2019-04-16
  • Nuclear Data Sheets for A=268,272,276,280,284,288,292
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-04-16
    Balraj Singh

    Spectroscopic information such as production, identification, half-lives, decay modes and possible excited states for experimentally known nuclides of mass numbers 268, 272, 276, 280, 284, 288, and 292 are presented together with the recommended values, superseding information and data in the previous ENSDF and NDS evaluation by 2005Gu33. No nuclides have yet been identified for A=296 and 300. In the

    更新日期:2019-04-16
  • TENDL: Complete Nuclear Data Library for Innovative Nuclear Science and Technology
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-01-24
    A.J. Koning, D. Rochman, J.-Ch. Sublet, N. Dzysiuk, M. Fleming, S. van der Marck

    The TENDL library is now established as one of the major nuclear data libraries in the world, striving for completeness and quality of nuclear data files for all isotopes, evaluation methods, processing and applied performance. To reach this status, some basic principles have been applied which sets it apart from other libraries: reproducible dedicated evaluations when differential data are available

    更新日期:2019-01-24
  • Recommended Nuclear Data for the Production of Selected Therapeutic Radionuclides
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-01-24
    J.W. Engle, A.V. Ignatyuk, R. Capote, B.V. Carlson, A. Hermanne, M.A. Kellett, T. Kibédi, G. Kim, F.G. Kondev, M. Hussain, O. Lebeda, A. Luca, Y. Nagai, H. Naik, A.L. Nichols, F.M. Nortier, S.V. Suryanarayana, S. Takács, M. Verpelli

    Increasing interest in the treatment of human disease by means of targeted radionuclide-based therapies requires an accurate understanding of achievable yields and quantification of realisable degrees of purity. Important studies within a more extensive Coordinated Research Project of the International Atomic Energy Agency (IAEA CRP) have included in-depth assessments and evaluations of all available

    更新日期:2019-01-24
  • The Scale Method as an Approach for Prompt Fission Neutron Spectra Analysis and Evaluation
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-01-24
    N.V. Kornilov

    The Scale Method was applied for an analysis of experimental and evaluated data of Prompt Fission Neutron Spectra for different isotopes and incident neutron energies below 6 MeV. It was demonstrated that the method describes all experimental data sets in the outgoing neutron energy range 0–7 MeV within uncertainties. Theoretical arguments were provided to support the application of this method. Some

    更新日期:2019-01-24
  • Improved Cumulative Fission Yield Measurements with Fission Spectrum Neutrons on 235U
    Nucl. Data Sheets (IF 5.944) Pub Date : 2019-01-24
    B.D. Pierson, A.M. Prinke, L.R. Greenwood, S.C. Stave, R.S. Wittman, J.G. Burch, J.T. Burke, S.W. Padgett, J.J. Ressler, G. Slavik, A. Tamashiro, A. Tonchev, W. Younes

    Two isotopically-characterized targets of high-purity (99.84±0.03%) 235U-oxide and a neutron dosimetry package were exposed to a pulsed neutron irradiation using the Godiva critical assembly at the National Criticality Experiments Research Center. Following irradiation, the fissioned targets were counted with a broad-energy germanium detector. Estimates of the total fissions for each target were made

    更新日期:2019-01-24
  • Nuclear Data Sheets for A=140
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-12-04
    N. Nica

    The 2006 evaluation of A=140 was updated using experimental results published before November 2018 from the various reaction and decay studies leading to the nuclei 140Sb, 140Te, 140I, 140Xe, 140Cs, 140Ba, 140La, 140Ce, 140Pr, 140Nd, 140Pm, 140Sm, 140Eu, 140Gd, 140Tb, 140Dy, 140Ho. These data are summarized and presented, together with adopted level schemes and properties.

    更新日期:2018-12-04
  • Nuclear Data Sheets for A=170
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-11-20
    C.M. Baglin, E.A. McCutchan, S. Basunia, E. Browne

    Nuclear structure data pertaining to all nuclei with mass number A=170 have been evaluated, and incorporated into the ENSDF data file. This evaluation supersedes the previous evaluation (Coral M. Baglin), Nuclear Data Sheets 96, 611 (2002), (cutoff date 15 August 2002) and subsequent updates of the ENSDF file for Yb to Dy (cutoff 15 April 2010), Lu (cutoff 8 October 1998), Pt (cutoff 17 February 1999)

    更新日期:2018-11-20
  • Nuclear Data Sheets for A=38
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-10-30
    Jun Chen

    All available experimental data of nuclear structure and decay are evaluated for the known nuclides of mass 38 (Mg, Al, Si, P, S, Cl, Ar, K, Ca, Sc, Ti). Detailed results of this evaluation are presented with the best values recommended for level energies, half-lives, γ-ray energies and intensities, decay properties (energies, intensities and placement of radiations), and other spectroscopic information

    更新日期:2018-10-30
  • Nuclear Data Sheets for A=136
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-10-30
    E.A. Mccutchan

    Spectroscopic data for all nuclei with mass number A=136 have been evaluated and the corresponding level schemes from radioactive decay and reaction studies are presented. No excited states are known in 136In, 136Eu, or 136Gd and 136Tb remains unidentified. Discrepancies between experiments on isomeric decays in 136Sb and 136La suggest the need for futher experimental investigation. The decay of 136Eu

    更新日期:2018-10-30
  • Nuclear Data Sheets for A=59
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-09-11
    M. Shamsuzzoha Basunia

    Evaluated spectroscopic data and level schemes from radioactive decay and nuclear reaction studies are presented for 59Sc, 59Ti, 59V, 59Cr, 59Mn, 59Fe, 59Co, 59Ni, 59Cu, 59Zn, 59Ga, and 59Ge. This evaluation for A=59 supersedes the earlier one by C. M. Baglin (2002Ba42) and updates for some nuclides in the ENSDF database. Highlights of this evaluation are the following: In 59Fe, a new level at 568

    更新日期:2018-09-11
  • Nuclear Data Sheets for A=171
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-09-11
    Coral M. Baglin, E.A. McCutchan

    Experimental data pertaining to all nuclei with mass number A=171 (Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg) have been evaluated. Level schemes from both radioactive decay and reaction studies are presented, along with associated tables of experimental data and adopted properties for levels and γ rays. This evaluation for A=171, which considers data received by 30 June 2018, supersedes

    更新日期:2018-09-11
  • Nuclear Data Sheets for A=188
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-05-30
    F.G. Kondev, S. Juutinen, D.J. Hartley

    Evaluated nuclear structure and decay data for all nuclei with mass number A=188 (Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Po) are presented. The experimental data are compiled and evaluated, and best values for level and gamma-ray energies, quantum numbers, lifetimes, gamma-ray intensities, and other nuclear properties are recommended. Inconsistencies and discrepancies that exist in the

    更新日期:2018-05-30
  • Nuclear Data Sheets for A=39
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-04-04
    Jun Chen

    Experimental nuclear structure data from various reactions and decays have been evaluated for all known nuclides of mass 39 (Mg, Al, Si, P, S, Cl, Ar, K, Ca, Sc, Ti). Detailed evaluated nuclear structure information is presented for each reaction and decay and the best values combining all available data are recommended for level energies, half-lives, γ-ray energies and intensities, decay properties

    更新日期:2018-04-04
  • ENDF/B-VIII.0: The 8th Major Release of the Nuclear Reaction Data Library with CIELO-project Cross Sections, New Standards and Thermal Scattering Data
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-03-07
    D.A. Brown, M.B. Chadwick, R. Capote, A.C. Kahler, A. Trkov, M.W. Herman, A.A. Sonzogni, Y. Danon, A.D. Carlson, M. Dunn, D.L. Smith, G.M. Hale, G. Arbanas, R. Arcilla, C.R. Bates, B. Beck, B. Becker, F. Brown, Y. Zhu

    We describe the new ENDF/B-VIII.0 evaluated nuclear reaction data library. ENDF/B-VIII.0 fully incorporates the new IAEA standards, includes improved thermal neutron scattering data and uses new evaluated data from the CIELO project for neutron reactions on 1H, 16O, 56Fe, 235U, 238U and 239Pu described in companion papers in the present issue of Nuclear Data Sheets. The evaluations benefit from recent

    更新日期:2018-03-07
  • Evaluation of the Neutron Data Standards
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-03-07
    A.D. Carlson, V.G. Pronyaev, R. Capote, G.M. Hale, Z.-P. Chen, I. Duran, F.-J. Hambsch, S. Kunieda, W. Mannhart, B. Marcinkevicius, R.O. Nelson, D. Neudecker, G. Noguere, M. Paris, S.P. Simakov, P. Schillebeeckx, D.L. Smith, X. Tao, W. Wang

    With the need for improving existing nuclear data evaluations, (e.g., ENDF/B-VIII.0 and JEFF-3.3 releases) the first step was to evaluate the standards for use in such a library. This new standards evaluation made use of improved experimental data and some developments in the methodology of analysis and evaluation. In addition to the work on the traditional standards, this work produced the extension

    更新日期:2018-03-07
  • CIELO Collaboration Summary Results: International Evaluations of Neutron Reactions on Uranium, Plutonium, Iron, Oxygen and Hydrogen
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-03-07
    M.B. Chadwick, R. Capote, A. Trkov, M.W. Herman, D.A. Brown, G.M. Hale, A.C. Kahler, P. Talou, A.J. Plompen, P. Schillebeeckx, M.T. Pigni, L. Leal, Y. Danon, A.D. Carlson, P. Romain, B. Morillon, E. Bauge, F.-J. Hambsch, S.C. van der Marck

    The CIELO collaboration has studied neutron cross sections on nuclides that significantly impact criticality in nuclear technologies - 235,238U, 239Pu, 56Fe, 16O and 1H - with the aim of improving the accuracy of the data and resolving previous discrepancies in our understanding. This multi-laboratory pilot project, coordinated via the OECD/NEA Working Party on Evaluation Cooperation (WPEC) Subgroup

    更新日期:2018-03-07
  • Evaluation of Neutron Reactions on Iron Isotopes for CIELO and ENDF/B-VIII.0
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-03-07
    M. Herman, A. Trkov, R. Capote, G.P.A. Nobre, D.A. Brown, R. Arcilla, Y. Danon, A. Plompen, S.F. Mughabghab, Q. Jing, G. Zhigang, L. Tingjin, L. Hanlin, R. Xichao, L. Leal, B.V. Carlson, T. Kawano, M. Sin, K. Guber

    A new suite of evaluations for 54,56,57,58Fe has been developed in the framework of the CIELO international collaboration. New resolved resonance ranges were evaluated for 54Fe and 57Fe, while modifications were applied to resonances in 56Fe. The low energy part of the 56Fe file is almost totally based on measurements. At higher energies in 56Fe and in the whole fast neutron range for minor isotopes

    更新日期:2018-03-07
  • IAEA CIELO Evaluation of Neutron-induced Reactions on 235U and 238U Targets
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-03-07
    R. Capote, A. Trkov, M. Sin, M.T. Pigni, V.G. Pronyaev, J. Balibrea, D. Bernard, D. Cano-Ott, Y. Danon, A. Daskalakis, T. Goričanec, M.W. Herman, B. Kiedrowski, S. Kopecky, E. Mendoza, D. Neudecker, L. Leal, G. Noguere, P. Talou

    Evaluations of nuclear reaction data for the major uranium isotopes 238U and 235U were performed within the scope of the CIELO Project on the initiative of the OECD/NEA Data Bank under Working Party on Evaluation Co-operation (WPEC) Subgroup 40 coordinated by the IAEA Nuclear Data Section. Both the mean values and covariances are evaluated from 10−5 eV up to 30 MeV. The resonance parameters of 238U

    更新日期:2018-03-07
  • Evaluations of Energy Spectra of Neutrons Emitted Promptly in Neutron-induced Fission of 235U and 239Pu
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-03-07
    D. Neudecker, P. Talou, T. Kawano, A.C. Kahler, M.C. White, T.N. Taddeucci, R.C. Haight, B. Kiedrowski, J.M. O'Donnell, J.A. Gomez, K.J. Kelly, M. Devlin, M.E. Rising

    The energy spectra of neutrons emitted promptly in the neutron-induced fission reactions of 235U and 239Pu were re-evaluated for ENDF/B-VIII.0. These evaluations are based on a careful modeling of all relevant physics processes, an extensive analysis of experimental data and a detailed quantification of pertinent uncertainties. Energy spectra of neutrons emitted in up to fourth chance fission are considered

    更新日期:2018-03-07
  • 239Pu(n,γ) from 10 eV to 1.3 MeV
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-03-07
    S. Mosby, T.A. Bredeweg, A. Couture, M. Jandel, T. Kawano, J. Ullmann, R.A. Henderson, C.Y. Wu

    The 239Pu(n,γ) cross section has been measured from 10 eV to 1.3 MeV as part of an experimental campaign using the Detector for Advanced Neutron Capture Experiments (DANCE). The work represents a significant advance in experimental technique, with improved systematic uncertainties in key regions in the keV to MeV regime. In general the results of prior work are confirmed with improved uncertainties

    更新日期:2018-03-07
  • The Prompt Fission Neutron Spectrum of 235U(n,f) below 2.5 MeV for Incident Neutrons from 0.7 to 20 MeV
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-03-07
    M. Devlin, J.A. Gomez, K.J. Kelly, R.C. Haight, J.M. O'Donnell, T.N. Taddeucci, H.Y. Lee, S.M. Mosby, B.A. Perdue, N. Fotiades, J.L. Ullmann, C.Y. Wu, B. Bucher, M.Q. Buckner, R.A. Henderson, D. Neudecker, M.C. White, P. Talou, C.J. Solomon

    New prompt fission neutron spectrum measurements are reported for 235U(n,f) reactions induced by neutrons with energies from 0.7 to 20 MeV. These measurements cover outgoing neutron energies from 2.5 MeV down to 10 keV, using an array of 6Li-glass scintillators for neutron detection and a double time-of-flight technique. The neutrons were produced at the Weapons Neutron Research facility of the Los

    更新日期:2018-03-07
  • Reference Cross Sections for Charged-particle Monitor Reactions
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-03-07
    A. Hermanne, A.V. Ignatyuk, R. Capote, B.V. Carlson, J.W. Engle, M.A. Kellett, T. Kibédi, G. Kim, F.G. Kondev, M. Hussain, O. Lebeda, A. Luca, Y. Nagai, H. Naik, A.L. Nichols, F.M. Nortier, S.V. Suryanarayana, S. Takács, M. Verpelli

    Evaluated cross sections of beam-monitor reactions are expected to become the de-facto standard for cross-section measurements that are performed over a very broad energy range in accelerators in order to produce particular radionuclides for industrial and medical applications. The requirements for such data need to be addressed in a timely manner, and therefore an IAEA coordinated research project

    更新日期:2018-03-07
  • Evaluation of Neutron-induced Cross Sections and their Related Covariances with Physical Constraints
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-03-07
    C. De Saint Jean, P. Archier, E. Privas, G. Noguère, B. Habert, P. Tamagno

    Nuclear data, along with numerical methods and the associated calculation schemes, continue to play a key role in reactor design, reactor core operating parameters calculations, fuel cycle management and criticality safety calculations. Due to the intensive use of Monte-Carlo calculations reducing numerical biases, the final accuracy of neutronic calculations increasingly depends on the quality of

    更新日期:2018-03-07
  • Nuclear Data Sheets for A=164
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-01-17
    Balraj Singh, Jun Chen

    Experimental nuclear structure data for the known A=164 isobaric nuclides (Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir) have been evaluated, and presented together with Adopted properties of level energies, and associated γ rays. The decay data for these nuclides have also been evaluated, providing Adopted values of γ and β radiations, and log ft values. No excited states are known

    更新日期:2018-01-17
  • Nuclear Data Sheets for A=217
    Nucl. Data Sheets (IF 5.944) Pub Date : 2018-01-17
    F.G. Kondev, E.A. McCutchan, B. Singh, K. Banerjee, S. Bhattacharya, A. Chakraborty, S. Garg, N. Jovancevic, S. Kumar, S.K. Rathi, T. Roy, Jounghwa Lee, R. Shearman

    The evaluated spectroscopic data are presented for 12 known nuclides with A=217 (Tl, Pb, Bi, Po, At, Rn, Fr, Ra, Ac, Th, Pa, U). For 217Tl, 217Pb, 217Pa, and 217U nuclei, only information on the ground state is available. Levels in 217Bi are known only from isomer decay following fragmentation reaction and those in 217At and 217Rn only from the α decay of 221Fr and 221Ra, respectively. High spin levels

    更新日期:2018-01-17
  • Nuclear Data Sheets for A=138
    Nucl. Data Sheets (IF 5.944) Pub Date : 2017-11-21
    Jun Chen

    Experimental nuclear structure data from various reactions and decays are compiled and evaluated for all known nuclides with mass number A=138 (Sn,Sb,Te,I,Xe,Cs,Ba,La,Ce,Pr,Nd,Pm,Sm,Eu,Gd,Tb). Detailed evaluated nuclear structure information is presented for each reaction and decay and the best values combining all available data are recommended for level energies, half-lives, γ-ray energies and intensities

    更新日期:2017-11-21
  • Nuclear Data Sheets for A=244
    Nucl. Data Sheets (IF 5.944) Pub Date : 2017-11-21
    C.D. Nesaraja

    Available information pertaining to the nuclear structure of ground and excited states for all known nuclei with mass numbers A=244 have been compiled and evaluated. The adopted level and decay schemes, as well as the detailed nuclear properties and configuration assignments based on experimental data are presented for these nuclides. When there are insufficient data, expected values from systematics

    更新日期:2017-11-21
  • Uncertainty-driven nuclear data evaluation including thermal (n,α) applied to 59Ni
    Nucl. Data Sheets (IF 5.944) Pub Date : 2017-10-06
    P. Helgesson, H. Sjöstrand, D. Rochman

    This paper presents a novel approach to the evaluation of nuclear data (ND), combining experimental data for thermal cross sections with resonance parameters and nuclear reaction modeling. The method involves sampling of various uncertain parameters, in particular uncertain components in experimental setups, and provides extensive covariance information, including consistent cross-channel correlations

    更新日期:2017-10-06
  • Nuclear Data Sheets for A = 99
    Nucl. Data Sheets (IF 5.944) Pub Date : 2017-10-06
    E. Browne, J.K. Tuli

    The evaluators present in this publication spectroscopic data and level schemes from radioactive decay and nuclear reactions studies for all isobars with mass number A=99.

    更新日期:2017-10-06
  • Nuclear Data Sheets for A = 51
    Nucl. Data Sheets (IF 5.944) Pub Date : 2017-09-14
    Jimin Wang, Xiaolong Huang

    The 2006 version of nuclear data sheets for A=51 (2006Hu10) has been revised and updated on the basis of the experimental results from various decay and reaction studies before March 2016. The experimental data for all known nuclei with mass number A=51 (Cl, Ar, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni) have been revised, updated, and incorporated into the ENSDF data file. The data sets of levels, gammas

    更新日期:2017-09-14
  • Nuclear Data Sheets for A=258
    Nucl. Data Sheets (IF 5.944) Pub Date : 2017-09-14
    Balraj Singh

    Spectroscopic data for A=258 nuclides have been updated and re-evaluated, superseding the data presented in the previous evaluation 2001Ak11 published by Y.A. Akovali. The excited state data for A=258 nuclei are largely unknown. With the exception of three low-energy gamma rays in 258Db from 262Bh α decay, no other gamma-ray data are available for A=258 nuclei.

    更新日期:2017-09-14
  • Nuclear Data Sheets for A=193
    Nucl. Data Sheets (IF 5.944) Pub Date : 2017-08-21
    M. Shamsuzzoha Basunia

    Evaluated spectroscopic data and level schemes from radioactive decay and nuclear reaction studies are presented for 193Ta, 193W, 193Re, 193Os, 193Ir, 193Pt, 193Au, 193Hg, 193Tl, 193Pb, 193Bi, 193Po, 193At, and 193Rn. This evaluation for A=193 supersedes the earlier one by E. Achterberg, et. al. (2006Ac01). Highlights of this evaluation are the following: Based on γγ-coincidence measurements by 2005Za15

    更新日期:2017-08-21
  • Nuclear Data Sheets for A=189
    Nucl. Data Sheets (IF 5.944) Pub Date : 2017-04-26
    T.D. Johnson, Balraj Singh

    Evaluated experimental data are presented for 13 known mass 189 nuclides (Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Po). Since the 2003Wu02 publication, structure and decay data from 25 new and primary publications have been incorporated in the current work, while adding a new 189Hf nuclide. New data have been added for all nuclides except 189Au and 189Hg. Moreover, several previous datasets were

    更新日期:2017-04-26
  • Nuclear Data Sheets for A=158
    Nucl. Data Sheets (IF 5.944) Pub Date : 2017-04-14
    N. Nica

    The experimental results published before February 2017 from the various reaction and decay studies leading to nuclides 158Nd, 158Pm, 158Sm, 158Eu, 158Gd, 158Tb, 158Dy, 158Ho, 158Er, 158Tm, 158Yb, 158Lu, 158Hf, 158Ta, 158W in the A=158 mass chain have been reviewed. These data are summarized and presented, together with adopted level schemes and properties. Large sections of the mass chain are almost

    更新日期:2017-04-14
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