Pub Date : 2025-07-01Epub Date: 2025-07-09DOI: 10.1016/j.nds.2025.06.001
S. Ota , E.A. McCutchan
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 47Ar, a new high precision measurement of 47K β decay, and first observation of excited levels and gamma-ray transitions in 47Mn.
{"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}
Pub Date : 2025-07-01Epub Date: 2025-07-09DOI: 10.1016/j.nds.2025.06.002
Alexandru Negret , Balraj Singh
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, γ-ray, and decay radiation. Limited level and gamma information is available for 86Ga (ground state and one excited level), 86Ge (six levels), and 86As (ten excited states), with their respective decays poorly known. Fairly detailed level and gamma data are available for 86Se, 86Br, 86Kr, 86Rb, 86Sr and 86Y nuclei. The decay of 86Br to 86Kr has recently been studied by gamma spectroscopy (2016Ur04) and by TAGS technique (2017Ri08), the latter suggesting that many additional levels in 86Kr exist which have not been detected in high-resolution γ-ray spectroscopy. The γ-ray spectra in 2016Ur04 were valid up to , whereas the Q(β) value of 7.63 MeV for 86Br permits population of high-energy levels. For 86Zr, 86Nb and 86Mo, the data are available for mostly the high-spin states, as the decays of 86Nb, 86Mo, and 86Tc, which could populate low-spin levels, are not known well. For 86Tc, only four levels are known from the decay of an isomeric activity in 86Tc. In addition, decay of 86Tc with g.s. to 0+ g.s. in 86Mo could involve superallowed β transition, which has been pursued experimentally in detail. For 86Ru 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.
{"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}
Pub Date : 2025-06-01Epub Date: 2025-05-13DOI: 10.1016/S0090-3752(25)00042-0
{"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":"2025-06-01","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}
The lack of completeness and systematic studies of cumulative fission product yield (FPY) from the three major actinides of 235U, 238U, and 239Pu, 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 235U, 238U, and 239Pu isotopes using quasi-monoenergetic neutron beams at 11 incident energies ranging from to 14.8 MeV.
{"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":"2025-06-01","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}
Pub Date : 2025-06-01Epub Date: 2025-05-13DOI: 10.1016/j.nds.2025.04.003
The NIFFTE fission Time Projection Chamber (fissionTPC) has been used to measure the 239Pu(n,f)/235U(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 239Pu target, in comparison to the measurement published in 2021, where a 239Pu electroplated target was used, are presented and discussed. The remeasurement presented here is in agreement with the previous fissionTPC result within measurement uncertainties.
利用NIFFTE裂变时间投影室（fissionTPC）在0.1 ~ 100 MeV范围内测量了中子诱导裂变的239Pu(n,f)/235U（n,f）截面比，精度较高。一个白色中子源由洛斯阿拉莫斯中子科学中心提供，在那里进行了实验，作为重新测量，以评估之前的裂变tpc结果与ENDF/ b - vii .0的大约2%的差异。基于fissionTPC提供裂变碎片电离剖面三维重建的新能力，对测量不确定度进行了详细的计算。本文介绍并讨论了目前使用气相沉积、高度均匀的239Pu靶获得的结果，与2021年发表的使用239Pu电镀靶的测量结果进行了比较。在测量不确定度范围内，这里提出的再测量与先前的裂变tpc结果一致。
{"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":"2025-06-01","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}
Pub Date : 2025-06-01Epub Date: 2025-05-13DOI: 10.1016/j.nds.2025.04.004
Jun Chen
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, 65Br has been studied theoretically but still remains unobserved experimentally, while at the neutron-rich end, 65V has been observed, but its ground-state T1/2 and Jπ wait to be measured and determined. No excited state has been observed for 65V, 65Cr, and 65Se. The ground-state spins and/or parities of 65Fe, 65Co, 65Ge, 65As, and 65Se still have not been definitely determined. Information for excited states in 65Mn and 65As is very limited. 65Cu is the most extensively studied via 26 different reactions and decays, followed by 65Zn and 65Ga. For 65Co and 65Ni, their radioactive decay schemes are incomplete. This work supersedes earlier full evaluations of A=65 published by 2010Br10, 1993Bh04, 1986Wa02, and 1975Au08.
{"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":"2025-06-01","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}
Pub Date : 2025-06-01Epub Date: 2025-05-13DOI: 10.1016/j.nds.2025.04.001
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
The 16O() reaction was measured at the Los Alamos Neutron Science Center white neutron source using γ-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 H2O and BeO targets in successive years. The unique high energies of γ rays emitted from the 16O() 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 γ-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 H2O 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 γ-ray and α decay branches from 16O excited states.
{"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":"2025-06-01","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}
Pub Date : 2025-05-01Epub Date: 2025-04-07DOI: 10.1016/S0090-3752(25)00030-4
{"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":"2025-05-01","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}
Pub Date : 2025-05-01Epub Date: 2025-04-07DOI: 10.1016/j.nds.2025.03.001
Jun Chen
Experimental nuclear structure and decay data are evaluated for 9 known nuclides of mass number A=32 (F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar). Detailed evaluated information is presented for each reaction and decay and recommended values combining all available data are provided for all spectroscopic properties of each level, γ transition, and decay radiation. Effort has been made to search for 32F (2019Ah07) with no success, suggesting unbound towards neutron emission. Information for excited states in 32Ne, 32Na and 32Ar are very limited, and spin-parity of 32Na remains undetermined experimentally; only a few excited states have been identified in 32Al, and the decay schemes of 32Mg β− decay to 32Al and 32Al to 32Si are still incomplete; 32Mg, 32P and 32S have been studied via various reactions and decays, with 32S one of the most extensively studied nuclei in the sd-shell. This work supersedes earlier full evaluations of A=32 by 2011Ou01, 1998En04, 1990En08 and 1978En02.
{"title":"Nuclear Structure and Decay Data for A=32 Isobars","authors":"Jun Chen","doi":"10.1016/j.nds.2025.03.001","DOIUrl":"10.1016/j.nds.2025.03.001","url":null,"abstract":"<div><div>Experimental nuclear structure and decay data are evaluated for 9 known nuclides of mass number A=32 (F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar). Detailed evaluated information is presented for each reaction and decay and recommended values combining all available data are provided for all spectroscopic properties of each level, <em>γ</em> transition, and decay radiation. Effort has been made to search for <sup>32</sup>F (2019Ah07) with no success, suggesting unbound towards neutron emission. Information for excited states in <sup>32</sup>Ne, <sup>32</sup>Na and <sup>32</sup>Ar are very limited, and spin-parity of <sup>32</sup>Na remains undetermined experimentally; only a few excited states have been identified in <sup>32</sup>Al, and the decay schemes of <sup>32</sup>Mg <em>β</em><sup>−</sup> decay to <sup>32</sup>Al and <sup>32</sup>Al to <sup>32</sup>Si are still incomplete; <sup>32</sup>Mg, <sup>32</sup>P and <sup>32</sup>S have been studied via various reactions and decays, with <sup>32</sup>S one of the most extensively studied nuclei in the sd-shell. This work supersedes earlier full evaluations of A=32 by 2011Ou01, 1998En04, 1990En08 and 1978En02.</div></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"201 ","pages":"Pages 1-345"},"PeriodicalIF":2.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785188","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}
Pub Date : 2025-05-01Epub Date: 2025-04-07DOI: 10.1016/j.nds.2025.03.002
F.G. Kondev
Evaluated nuclear structure and decay data for all nuclei with mass number A=206 (206Pt, 206Au, 206Hg, 206Tl, 206Pb, 206Bi, 206Po, 206At, 206Rn, 206Fr, 206Ra and 206Ac), are presented. All available experimental data are compiled and evaluated, and best values for level and γ-ray energies, quantum numbers, lifetimes, γ-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 (https://www-nds.iaea.org/public/ensdf_pgm/) 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 Nuclear Data Sheets 109, 1527 (2008).
{"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":"2025-05-01","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}
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