{"title":"Nuclear Data Sheets Symbols and Abbreviations","authors":"","doi":"10.1016/S0090-3752(25)00052-3","DOIUrl":"10.1016/S0090-3752(25)00052-3","url":null,"abstract":"","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"203 ","pages":"Page IBC"},"PeriodicalIF":2.8,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144588368","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=47","authors":"S. Ota , E.A. McCutchan","doi":"10.1016/j.nds.2025.06.001","DOIUrl":"10.1016/j.nds.2025.06.001","url":null,"abstract":"<div><div>Spectroscopic data for all nuclei with mass number A=47 have been evaluated and the corresponding level schemes from radioactive decay and reaction studies are presented. Highlights from this evaluation include first observation of gamma-ray transitions in <sup>47</sup>Ar, a new high precision measurement of <sup>47</sup>K <em>β</em> decay, and first observation of excited levels and gamma-ray transitions in <sup>47</sup>Mn.</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"203 ","pages":"Pages 1-282"},"PeriodicalIF":2.8,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144588366","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=86 Isobars","authors":"Alexandru Negret , Balraj Singh","doi":"10.1016/j.nds.2025.06.002","DOIUrl":"10.1016/j.nds.2025.06.002","url":null,"abstract":"<div><div>Experimental nuclear spectroscopic data are evaluated for 14 known nuclides of mass number A=86 (Ga, Ge, As, Se, Br, Kr, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru). Detailed evaluated information is presented for each reaction and decay. Recommended values combining all available data are provided for the spectroscopic properties of each level, <em>γ</em>-ray, and decay radiation. Limited level and gamma information is available for <sup>86</sup>Ga (ground state and one excited level), <sup>86</sup>Ge (six levels), and <sup>86</sup>As (ten excited states), with their respective <span><math><msup><mrow><mi>β</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> decays poorly known. Fairly detailed level and gamma data are available for <sup>86</sup>Se, <sup>86</sup>Br, <sup>86</sup>Kr, <sup>86</sup>Rb, <sup>86</sup>Sr and <sup>86</sup>Y nuclei. The decay of <sup>86</sup>Br to <sup>86</sup>Kr has recently been studied by gamma spectroscopy (2016Ur04) and by TAGS technique (2017Ri08), the latter suggesting that many additional levels in <sup>86</sup>Kr exist which have not been detected in high-resolution <em>γ</em>-ray spectroscopy. The <em>γ</em>-ray spectra in 2016Ur04 were valid up to <span><math><mi>E</mi><mi>γ</mi><mo>=</mo><mn>4</mn><mspace></mspace><mtext>MeV</mtext></math></span>, whereas the Q(<em>β</em>) value of 7.63 MeV for <sup>86</sup>Br permits population of high-energy levels. For <sup>86</sup>Zr, <sup>86</sup>Nb and <sup>86</sup>Mo, the data are available for mostly the high-spin states, as the decays of <sup>86</sup>Nb, <sup>86</sup>Mo, and <sup>86</sup>Tc, which could populate low-spin levels, are not known well. For <sup>86</sup>Tc, only four levels are known from the decay of an isomeric activity in <sup>86</sup>Tc. In addition, decay of <sup>86</sup>Tc with g.s. <span><math><msup><mrow><mtext>J</mtext></mrow><mrow><mi>π</mi></mrow></msup><mo>=</mo><mo>(</mo><msup><mrow><mn>0</mn></mrow><mrow><mo>+</mo></mrow></msup><mo>)</mo></math></span> to 0<sup>+</sup> g.s. in <sup>86</sup>Mo could involve superallowed <em>β</em> transition, which has been pursued experimentally in detail. For <sup>86</sup>Ru only the isotopic identification is established, with its half-life and decay modes unknown. The evaluated data in this work supersede data in earlier ENSDF evaluation of A=86 nuclei by 2015Ne01, where the literature cutoff date was November 30, 2014.</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"203 ","pages":"Pages 283-646"},"PeriodicalIF":2.8,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144588367","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(25)00042-0","DOIUrl":"10.1016/S0090-3752(25)00042-0","url":null,"abstract":"","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"202 ","pages":"Page IBC"},"PeriodicalIF":2.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936013","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":"Energy dependence of chain fission product yields from neutron-induced fission of 235U, 238U, and 239Pu","authors":"A.P. Tonchev , J.A. Silano , A.P.D. Ramirez , R.C. Malone , M.A. Stoyer , M.E. Gooden , T.A. Bredeweg , D.J. Vieira , J.B. Wilhelmy , S.W. Finch , C.R. Howell , W. Tornow","doi":"10.1016/j.nds.2025.04.002","DOIUrl":"10.1016/j.nds.2025.04.002","url":null,"abstract":"<div><div>The lack of completeness and systematic studies of cumulative fission product yield (FPY) from the three major actinides of <sup>235</sup>U, <sup>238</sup>U, and <sup>239</sup>Pu, over a broad energy range, was the primary motivation for the LLNL-LANL-TUNL collaboration. Given the focus on resolving FPY behavior around fission spectrum neutron energies, our 2016 data provides FPY measurements in fine energy steps in the range of 0.5–5.5 MeV and an additional anchor point at 14.8 MeV. Recently, our collaboration filled the gap between second chance fission and 14.8 MeV, providing a comprehensive study at eleven incident neutron energies from 0.5 to 14.8 MeV. However, during the course of the last measurements, it was found that the reported masses of the actinide deposits in the fission ionization chambers, which were used to measure the number of fissions, were not consistent with the complementary tests. Therefore, some corrections to the old data are needed. The purpose of this paper is to summarize all of the high-yield FPY data obtained for <sup>235</sup>U, <sup>238</sup>U, and <sup>239</sup>Pu isotopes using quasi-monoenergetic neutron beams at 11 incident energies ranging from <span><math><msub><mrow><mi>E</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>=</mo><mn>0.5</mn></math></span> to 14.8 MeV.</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"202 ","pages":"Pages 12-29"},"PeriodicalIF":2.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936010","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":"Remeasurement of the 239Pu(n,f)/235U(n,f) Cross-Section Ratio with the NIFFTE fission Time Projection Chamber Using Vapor-deposited Targets","authors":"","doi":"10.1016/j.nds.2025.04.003","DOIUrl":"10.1016/j.nds.2025.04.003","url":null,"abstract":"<div><div>The NIFFTE fission Time Projection Chamber (fissionTPC) has been used to measure the <sup>239</sup>Pu(n,f)/<sup>235</sup>U(n,f) cross-section ratio for neutron-induced fission in the range of 0.1–100 MeV, with high precision. A white neutron source was provided by the Los Alamos Neutron Science Center, where the experiment was conducted as a remeasurement to evaluate a roughly 2% discrepancy of the previous fissionTPC results with ENDF/B-VIII.0. A detailed accounting of measurement uncertainties was performed, based on the fissionTPC's novel ability to provide three-dimensional reconstruction of fission-fragment ionization profiles. Current results obtained using a vapor-deposited, highly uniform <sup>239</sup>Pu target, in comparison to the measurement published in 2021, where a <sup>239</sup>Pu electroplated target was used, are presented and discussed. The remeasurement presented here is in agreement with the previous fissionTPC result within measurement uncertainties.</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"202 ","pages":"Pages 30-56"},"PeriodicalIF":2.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936011","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=65 Isobars","authors":"Jun Chen","doi":"10.1016/j.nds.2025.04.004","DOIUrl":"10.1016/j.nds.2025.04.004","url":null,"abstract":"<div><div>Experimental nuclear structure and decay data are evaluated for 13 known nuclides of mass number A=65 (V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga Ge, As, Se, Br). Detailed evaluated level properties and related information are presented and recommended spectroscopic parameters are provided, combining all the data from various reactions and decays. At the proton-rich end, <sup>65</sup>Br has been studied theoretically but still remains unobserved experimentally, while at the neutron-rich end, <sup>65</sup>V has been observed, but its ground-state T<sub>1/2</sub> and J<sup><em>π</em></sup> wait to be measured and determined. No excited state has been observed for <sup>65</sup>V, <sup>65</sup>Cr, and <sup>65</sup>Se. The ground-state spins and/or parities of <sup>65</sup>Fe, <sup>65</sup>Co, <sup>65</sup>Ge, <sup>65</sup>As, and <sup>65</sup>Se still have not been definitely determined. Information for excited states in <sup>65</sup>Mn and <sup>65</sup>As is very limited. <sup>65</sup>Cu is the most extensively studied via 26 different reactions and decays, followed by <sup>65</sup>Zn and <sup>65</sup>Ga. For <sup>65</sup>Co and <sup>65</sup>Ni, their radioactive decay schemes are incomplete. This work supersedes earlier full evaluations of A=65 published by 2010Br10, 1993Bh04, 1986Wa02, and 1975Au08.</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"202 ","pages":"Pages 57-496"},"PeriodicalIF":2.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936012","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}
K.J. Kelly, P.A. Copp, E.A. Bennett, M. Devlin, J.M. O'Donnell, M. Paris, H. Sasaki, R.O. Nelson, J. Surbrook, C. Arnold
{"title":"High-precision Measurement of the 16O(n,n′γ) Cross Section using γ-ray Detection in Liquid Scintillators with H2O and BeO Targets","authors":"K.J. Kelly, P.A. Copp, E.A. Bennett, M. Devlin, J.M. O'Donnell, M. Paris, H. Sasaki, R.O. Nelson, J. Surbrook, C. Arnold","doi":"10.1016/j.nds.2025.04.001","DOIUrl":"10.1016/j.nds.2025.04.001","url":null,"abstract":"<div><div>The <sup>16</sup>O(<span><math><mi>n</mi><mo>,</mo><msup><mrow><mi>n</mi></mrow><mrow><mo>′</mo></mrow></msup><mi>γ</mi></math></span>) reaction was measured at the Los Alamos Neutron Science Center white neutron source using <em>γ</em>-ray detection in liquid scintillators present in the upper hemisphere of the Correlated Gamma-Neutron Array for sCattering (CoGNAC). Separate measurements of this reaction were performed using H<sub>2</sub>O and BeO targets in successive years. The unique high energies of <em>γ</em> rays emitted from the <sup>16</sup>O(<span><math><mi>n</mi><mo>,</mo><msup><mrow><mi>n</mi></mrow><mrow><mo>′</mo></mrow></msup><mi>γ</mi></math></span>) reaction facilitated a clean selection of this reaction from threshold to 9.8 MeV incident neutron energy without the need for precise measurements of the <em>γ</em>-ray energy or the scattered neutrons. The precise time resolution of the liquid scintillator detectors was then exploited to obtain high-resolution incident neutron energy measurements, and good agreement was obtained between the H<sub>2</sub>O and BeO results reported here. The dominant literature data sets for this reaction have systematic differences between them, but the present results improve upon the neutron energy resolution of earlier measurements and show important discrepancies in recent data. Tentative data are also shown up to 20 MeV incident neutron energy but are potentially subject to improved understanding of the relative <em>γ</em>-ray and <em>α</em> decay branches from <sup>16</sup>O excited states.</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"202 ","pages":"Pages 1-11"},"PeriodicalIF":2.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936009","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(25)00030-4","DOIUrl":"10.1016/S0090-3752(25)00030-4","url":null,"abstract":"","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"201 ","pages":"Page IBC"},"PeriodicalIF":2.8,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785185","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=206 Isobars","authors":"F.G. Kondev","doi":"10.1016/j.nds.2025.03.002","DOIUrl":"10.1016/j.nds.2025.03.002","url":null,"abstract":"<div><div>Evaluated nuclear structure and decay data for all nuclei with mass number A=206 (<sup>206</sup>Pt, <sup>206</sup>Au, <sup>206</sup>Hg, <sup>206</sup>Tl, <sup>206</sup>Pb, <sup>206</sup>Bi, <sup>206</sup>Po, <sup>206</sup>At, <sup>206</sup>Rn, <sup>206</sup>Fr, <sup>206</sup>Ra and <sup>206</sup>Ac), 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 F.G. Kondev (2008Ko21), published in <em>Nuclear Data Sheets</em> 109, 1527 (2008).</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"201 ","pages":"Pages 346-607"},"PeriodicalIF":2.8,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785184","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}