Nuclear Data Sheets最新文献

{"title":"Beta-delayed gamma spectra compilation and analysis following the thermal-neutron induced fission of 235U, 239,241Pu","authors":"Z. Harris ,&nbsp;B. Hill ,&nbsp;S. Kim ,&nbsp;A. Mattera ,&nbsp;E.A. McCutchan ,&nbsp;O. Palaguachi ,&nbsp;M. Seeley ,&nbsp;A.A. Sonzogni","doi":"10.1016/j.nds.2026.04.002","DOIUrl":"10.1016/j.nds.2026.04.002","url":null,"abstract":"<div><div>The integral gamma and electron spectra emitted by fission products, also known as delayed gamma and electron spectra, were measured at Oak Ridge National Laboratory in the 1970s for the thermal-neutron induced fission of ²³⁵U and ^239,241Pu. Scintillator detectors were used to measure these spectra, data used later on to obtain decay heat values - that is, the spectra mean values per unit time as function of time - work that was published in the Nuclear Science and Technology journal; the spectral data, however, was only published in laboratory reports. In this work, we analyze the gamma spectra data using modern methods and nuclear databases to reveal the signature of individual fission products as well as to gauge the performance of the ENDF/B-VIII.0 decay data sub-library, concluding about possible future enhancements in predictive capabilities.</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"210 ","pages":"Pages 225-242"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147827155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ENDF/B-VIII.1: Updated Nuclear Reaction Data Library for Science and Applications","authors":"G.P.A. Nobre ,&nbsp;R. Capote ,&nbsp;M.T. Pigni ,&nbsp;A. Trkov ,&nbsp;C.M. Mattoon ,&nbsp;D. Neudecker ,&nbsp;D.A. Brown ,&nbsp;M.B. Chadwick ,&nbsp;A.C. Kahler ,&nbsp;N.A. Kleedtke ,&nbsp;M. Zerkle ,&nbsp;A.I. Hawari ,&nbsp;C.W. Chapman ,&nbsp;N.C. Fleming ,&nbsp;J.L. Wormald ,&nbsp;K. Ramić ,&nbsp;Y. Danon ,&nbsp;N.A. Gibson ,&nbsp;P. Brain ,&nbsp;M.W. Paris ,&nbsp;R.Q. Wright","doi":"10.1016/j.nds.2026.04.001","DOIUrl":"10.1016/j.nds.2026.04.001","url":null,"abstract":"<div><div>The ENDF/B-VIII.1 library is the newest recommended evaluated nuclear data file by the Cross Section Evaluation Working Group (CSEWG) for use in nuclear science and technology applications, and incorporates advances made in the six years since the release of ENDF/B-VIII.0. Among key advances made are that the ²³⁹Pu file was reevaluated by a joint international effort and that updated ^16,18O, ¹⁹F, ^28–30Si, ^50–54Cr, ⁵⁵Mn, ^54,56,57Fe, ^63,65Cu, ¹³⁹La, ^233,235,238U, and ^240,241Pu neutron nuclear data from the IAEA coordinated INDEN collaboration were adopted. Over 60 neutron dosimetry cross sections were adopted from the IAEA's IRDFF-II library. In addition, the new library includes significant changes for ³He, ⁶Li, ⁹Be, ⁵¹V, ⁸⁸Sr, ¹⁰³Rh, ^140,142Ce, Dy, ¹⁸¹Ta, Pt, ^206–208Pb, and ^234,236U neutron data, and new nuclear data for the photonuclear, charged-particle and atomic sublibraries. Numerous thermal neutron scattering kernels were reevaluated or provided for the very first time. On the covariance side, work was undertaken to introduce better uncertainty quantification standards and testing for nuclear data covariances. The significant effort to reevaluate important nuclides has reduced bias in the simulations of many integral experiments with particular progress noted for fluorine, copper, and stainless steel containing benchmarks. Data issues hindered the successful deployment of the previous ENDF/B-VIII.0 for commercial nuclear power applications in high burnup situations. These issues were addressed by improving the ²³⁸U and ^239,240,241Pu evaluated data in the resonance region. The new library performance as a function of burnup is similar to the reference ENDF/B-VII.1 library. The ENDF/B-VIII.1 data are available in ENDF-6 and GNDS format at <span><span>https://doi.org/10.11578/endf/2571019</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"210 ","pages":"Pages 1-224"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147827154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nuclear Data Sheets Symbols and Abbreviations","authors":"","doi":"10.1016/S0090-3752(26)00032-3","DOIUrl":"10.1016/S0090-3752(26)00032-3","url":null,"abstract":"","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"210 ","pages":"Page IBC"},"PeriodicalIF":2.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147827124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nuclear Data Sheets for A=261, 265","authors":"M. Gupta","doi":"10.1016/j.nds.2026.02.003","DOIUrl":"10.1016/j.nds.2026.02.003","url":null,"abstract":"<div><div>The Nuclear Data Sheets for A=261 (1999Ar21) and A=265 (1999Ar21) and a part of (2000Fi12) have been revised using experimental decay and reaction data received by January 1, 2018.</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"209 ","pages":"Pages 499-536"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147359846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nuclear Structure and Decay Data for A=216 Isobars","authors":"C. Morse","doi":"10.1016/j.nds.2026.02.002","DOIUrl":"10.1016/j.nds.2026.02.002","url":null,"abstract":"<div><div>Experimental data from reaction and decay studies on nuclei with A=216 have been reviewed. Elements included in this review span from mercury (Z=80) to uranium (Z=92). Based on the published data, level and decay schemes are presented for the evaluated nuclides. This work updates and supersedes the previous A=216 evaluation (2007Wu02).</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"209 ","pages":"Pages 409-498"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147359848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nuclear Data Sheets Symbols and Abbreviations","authors":"","doi":"10.1016/S0090-3752(26)00022-0","DOIUrl":"10.1016/S0090-3752(26)00022-0","url":null,"abstract":"","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"209 ","pages":"Page IBC"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147359847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nuclear Structure and Decay Data for A=169 Isobars","authors":"M. Shamsuzzoha Basunia","doi":"10.1016/j.nds.2026.02.001","DOIUrl":"10.1016/j.nds.2026.02.001","url":null,"abstract":"<div><div>Experimental data pertaining to all nuclei with mass number A=169 (Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt) 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 <em>γ</em> rays. The present evaluation for A=169 supersedes the 2008 evaluation, 2008Ba31, by C.M. Baglin.</div><div>A few highlights of this evaluation:</div><div>More extensive work on <em>ε</em> decay from ¹⁶⁹W is needed and new experimental work will be required to resolve a discrepancy between the J^<em>π</em> values deduced for a 180-keV level in ¹⁶⁹Ta based on extensive band structure from (HI,xn<em>γ</em>) work (J^<em>π</em>=1/2⁻) and TDPAD measurements (J=5/2).</div><div>Low lying states of ¹⁶⁹Os were studied via fine structure of ¹⁷³Pt <em>α</em> decay in 2014ThZZ. The E<em>α</em>s feeding the g.s. of ¹⁶⁹Os in 2008Ba31 are separated well into two consistent groups to feed the g.s. and the newly proposed state at 34.84 keV. Based on the studies of 2014ThZZ and 2021Zh52, the g.s. spin-parity assignment of ¹⁶⁹Os has been proposed to be (7/2⁻) from (5/2⁻).</div><div>The ¹⁶⁹Ir g.s. half-life and alpha emission branching reported in 2012Th13 from ¹⁷³Au <em>α</em> decay measurements are preferred over the values in 2005Sc22. The reported half-life value in 2005Sc22 for ¹⁶⁹Ir g.s. is discrepant and the research work was carried out in the same lab of 2012Th13.</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"209 ","pages":"Pages 1-408"},"PeriodicalIF":2.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147359849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nuclear Data Sheets for A=148","authors":"N. Nica","doi":"10.1016/j.nds.2026.01.001","DOIUrl":"10.1016/j.nds.2026.01.001","url":null,"abstract":"<div><div>The experimental results published before January 2026 from the various reaction and decay studies leading to nuclides of Z=54 to Z=70, ¹⁴⁸Xe, ¹⁴⁸Cs, ¹⁴⁸Ba, ¹⁴⁸La, ¹⁴⁸Ce, ¹⁴⁸Pr, ¹⁴⁸Nd, ¹⁴⁸Pm, ¹⁴⁸Sm, ¹⁴⁸Eu, ¹⁴⁸Gd, ¹⁴⁸Tb, ¹⁴⁸Dy, ¹⁴⁸Ho, ¹⁴⁸Er, ¹⁴⁸Tm, ¹⁴⁸Yb in the A=148 mass chain have been reviewed and the data are presented together with adopted level schemes and properties. This work supersedes the previous evaluation of the A=148 nuclides by published by N. Nica in Nuclear Data Sheets 117, 1 (2014).</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"208 ","pages":"Pages 1-396"},"PeriodicalIF":2.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recommended Nuclear Structure and Decay Data for A=229 Isobars","authors":"F.G. Kondev ,&nbsp;J.K. Tuli ,&nbsp;E. Browne","doi":"10.1016/j.nds.2026.01.002","DOIUrl":"10.1016/j.nds.2026.01.002","url":null,"abstract":"<div><div>Evaluated nuclear structure and decay data for all nuclei with mass number A=229 (²²⁹At, ²²⁹Rn, ²²⁹Fr, ²²⁹Ra, ²²⁹Ac, ²²⁹Th, ²²⁹Pa, ²²⁹U, ²²⁹Np, ²²⁹Pu, and ²²⁹Am) are presented. All available experimental data are compiled and evaluated, and best values for level and <em>γ</em>-ray energies, quantum numbers, lifetimes, <em>γ</em>-ray intensities and transition probabilities, as well as other nuclear properties, are recommended. Inconsistencies and discrepancies that exist in the literature are discussed. A number of computer codes (<span><span>https://www-nds.iaea.org/public/ensdf_pgm/</span><svg><path></path></svg></span>) developed by members of the NSDD network were used during the evaluation process. This work supersedes the earlier evaluation by E. Browne and J.K. Tuli (2008Br17), published in <em>Nuclear Data Sheets</em> 109, 2657 (2008).</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"208 ","pages":"Pages 397-567"},"PeriodicalIF":2.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"General Policies","authors":"","doi":"10.1016/S0090-3752(26)00011-6","DOIUrl":"10.1016/S0090-3752(26)00011-6","url":null,"abstract":"","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"208 ","pages":"Pages iii-x"},"PeriodicalIF":2.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}