Pub Date : 2025-10-18DOI: 10.1016/j.adt.2025.101768
F.F. Goryaev , I.I. Tupitsyn
The results of calculations for the total energies, ionization energies, and one-electron binding energies for ground-state configurations of tungsten ions W I to W73＋ are presented. Calculations are performed in the intermediate coupling scheme on the basis of the Dirac–Fock method with taking into account the Breit and quantum electrodynamics corrections. Within the framework of the configuration interaction approach, all relativistic configurations corresponding to the non-relativistic one are used to obtain total energies and wave functions in the intermediate coupling scheme. The ionization energies are calculated as differences between the total energies of the neighboring ions with charges differing by one unit. Comparisons are given with other available data.
{"title":"Relativistic calculations for Tungsten ions W I to W73＋: Total energies, ionization energies, and one-electron binding energies","authors":"F.F. Goryaev , I.I. Tupitsyn","doi":"10.1016/j.adt.2025.101768","DOIUrl":"10.1016/j.adt.2025.101768","url":null,"abstract":"<div><div>The results of calculations for the total energies, ionization energies, and one-electron binding energies for ground-state configurations of tungsten ions W I to W<sup>73＋</sup> are presented. Calculations are performed in the intermediate coupling scheme on the basis of the Dirac–Fock method with taking into account the Breit and quantum electrodynamics corrections. Within the framework of the configuration interaction approach, all relativistic configurations corresponding to the non-relativistic one are used to obtain total energies and wave functions in the intermediate coupling scheme. The ionization energies are calculated as differences between the total energies of the neighboring ions with charges differing by one unit. Comparisons are given with other available data.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"167 ","pages":"Article 101768"},"PeriodicalIF":4.1,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2025-09-24DOI: 10.1016/j.adt.2025.101758
Stephen Croft , Andrea Favalli , Robert D. McElroy Jr.
An evaluation of the half-life of 252Cf is undertaken based on a detailed review of twelve published determinations. The values and associated uncertainty estimates reported in each publication have been checked and updated where possible and appropriate to do so. A weighted mean analysis is used to select a recommended value. The available data is, however, not considered statistically consistent and some expert judgement is needed. A key aspect of the present analysis is the inclusion of an additional variance contribution to allow for the fact that the statistical weights are themselves imprecisely known. The final recommended value is y, where 1 year(y) equals 365.25 days (d).
{"title":"Review of the 252Cf half-life and its uncertainty","authors":"Stephen Croft , Andrea Favalli , Robert D. McElroy Jr.","doi":"10.1016/j.adt.2025.101758","DOIUrl":"10.1016/j.adt.2025.101758","url":null,"abstract":"<div><div>An evaluation of the half-life of <sup>252</sup>Cf is undertaken based on a detailed review of twelve published determinations. The values and associated uncertainty estimates reported in each publication have been checked and updated where possible and appropriate to do so. A weighted mean analysis is used to select a recommended value. The available data is, however, not considered statistically consistent and some expert judgement is needed. A key aspect of the present analysis is the inclusion of an additional variance contribution to allow for the fact that the statistical weights are themselves imprecisely known. The final recommended value is <span><math><mrow><mo>(</mo><mn>2</mn><mo>.</mo><mn>650</mn><mo>±</mo><mn>0</mn><mo>.</mo><mn>003</mn><mo>)</mo></mrow></math></span> y, where 1 year(y) equals 365.25 days (d).</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"167 ","pages":"Article 101758"},"PeriodicalIF":4.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2025-09-10DOI: 10.1016/j.adt.2025.101759
J. Ruczkowski , M. Elantkowska
The values of the radiative parameters for singly-ionized niobium (Nb II) were determined using a semi-empirical method. The eigenvector amplitudes determined in our previously published research were adopted. In most cases, the calculated values of the oscillator strengths and radiative lifetimes agree well with the experimental data. Predictions of the values of the radiative parameters are also provided.
{"title":"Semi-empirical determination of radiative parameters for Nb II","authors":"J. Ruczkowski , M. Elantkowska","doi":"10.1016/j.adt.2025.101759","DOIUrl":"10.1016/j.adt.2025.101759","url":null,"abstract":"<div><div>The values of the radiative parameters for singly-ionized niobium (Nb II) were determined using a semi-empirical method. The eigenvector amplitudes determined in our previously published research were adopted. In most cases, the calculated values of the oscillator strengths and radiative lifetimes agree well with the experimental data. Predictions of the values of the radiative parameters are also provided.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"167 ","pages":"Article 101759"},"PeriodicalIF":4.1,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2025-08-26DOI: 10.1016/j.adt.2025.101757
Jian-Jie Wan, Qin Ma, Zhao-Yang Wu, Jiao Li, Bin Bai, Fan Wu
Based on the multiconfiguration Dirac–Hartree–Fock (MCDHF) and relativistic configuration interaction (RCI) methods, the fine-structure levels and and splittings between the singly excited states and have been calculated for the lithium isoelectronic sequence with . The effect of the Breit interaction on the fine-structure levels, splittings and the electric dipole (E1), magnetic quadrupole (M2), magnetic dipole (M1) and electric quadrupole (E2) transition rates between them has been discussed in detail for the Li-like ions. The Breit interaction contribution to the energy levels is larger than the self energy in low- ions, but in medium to high- ions the former is smaller than the latter for with , with and with
{"title":"Effects of the Breit and QED corrections on the fine structure 1s22s2S1/2 and 1s22p2P1/2,3/2 in the lithium isoelectronic sequence","authors":"Jian-Jie Wan, Qin Ma, Zhao-Yang Wu, Jiao Li, Bin Bai, Fan Wu","doi":"10.1016/j.adt.2025.101757","DOIUrl":"10.1016/j.adt.2025.101757","url":null,"abstract":"<div><div>Based on the multiconfiguration Dirac–Hartree–Fock (MCDHF) and relativistic configuration interaction (RCI) methods, the fine-structure levels <span><math><mrow><mn>1</mn><msup><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>2</mn><mi>s</mi><msup><mrow><mspace></mspace></mrow><mrow><mn>2</mn></mrow></msup><msub><mrow><mi>S</mi></mrow><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span> and <span><math><mrow><mn>1</mn><msup><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>2</mn><mi>p</mi><msup><mrow><mspace></mspace></mrow><mrow><mn>2</mn></mrow></msup><msub><mrow><mi>P</mi></mrow><mrow><mn>1</mn><mo>/</mo><mn>2</mn><mo>,</mo><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span> and splittings between the singly excited states <span><math><mrow><mn>1</mn><msup><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>2</mn><mi>p</mi><msup><mrow><mspace></mspace></mrow><mrow><mn>2</mn></mrow></msup><msub><mrow><mi>P</mi></mrow><mrow><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span> and <span><math><mrow><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup><msub><mrow><mi>P</mi></mrow><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span> have been calculated for the lithium isoelectronic sequence with <span><math><mrow><mi>Z</mi><mo>=</mo><mn>5</mn><mo>−</mo><mn>92</mn></mrow></math></span>. The effect of the Breit interaction on the fine-structure levels, splittings and the electric dipole (E1), magnetic quadrupole (M2), magnetic dipole (M1) and electric quadrupole (E2) transition rates between them has been discussed in detail for the Li-like ions. The Breit interaction contribution to the energy levels is larger than the self energy in low-<span><math><mi>Z</mi></math></span> ions, but in medium to high-<span><math><mi>Z</mi></math></span> ions the former is smaller than the latter for <span><math><mrow><mn>1</mn><msup><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>2</mn><mi>s</mi><msup><mrow><mspace></mspace></mrow><mrow><mn>2</mn></mrow></msup><msub><mrow><mi>S</mi></mrow><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span> with <span><math><mrow><mi>Z</mi><mo>=</mo><mn>11</mn><mo>−</mo><mn>92</mn></mrow></math></span>, <span><math><mrow><mn>1</mn><msup><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>2</mn><mi>p</mi><msup><mrow><mspace></mspace></mrow><mrow><mn>2</mn></mrow></msup><msub><mrow><mi>P</mi></mrow><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span> with <span><math><mrow><mi>Z</mi><mo>=</mo><mn>16</mn><mo>−</mo><mn>92</mn></mrow></math></span> and <span><math><mrow><mn>1</mn><msup><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>2</mn><mi>p</mi><msup><mrow><mspace></mspace></mrow><mrow><mn>2</mn></mrow></msup><msub><mrow><mi>P</mi></mrow><mrow><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span> with <span><math><mrow><mi>Z</mi><mo>=</mo><mn>12</mn><mo>−</mo><mn>92</mn","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"166 ","pages":"Article 101757"},"PeriodicalIF":4.1,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2025-08-23DOI: 10.1016/j.adt.2025.101756
S.P. Limandri , A.C. Carreras , J.C. Trincavelli , J.A. Guzmán , D.M. Mitnik , C.C. Montanari , S. Segui
A comprehensive compilation of experimental K-shell ionization cross sections induced by electron impact has been assembled, including results up to December 2024. The data are organized according to the target atomic number and to the incident electron energy for elements ranging from H to U. From the 2509 reported data, more than 50% pertain only to 8 elements (H, He, Ar, Cr, Fe, Ni, Cu, and Ag). Conversely, 13 elements have only one or two results, and no data is available for 27 elements in the range of atomic numbers considered. Additionally, a further inspection of the database reveals that the majority of the data is concentrated within a small energy range, spanning up to four times the K-shell ionization energy. Finally, the different methods used to measure the ionization cross section are analyzed and a discussion about the main sources of uncertainties is presented.
{"title":"Experimental cross sections for K-shell ionization by electron impact","authors":"S.P. Limandri , A.C. Carreras , J.C. Trincavelli , J.A. Guzmán , D.M. Mitnik , C.C. Montanari , S. Segui","doi":"10.1016/j.adt.2025.101756","DOIUrl":"10.1016/j.adt.2025.101756","url":null,"abstract":"<div><div>A comprehensive compilation of experimental K-shell ionization cross sections induced by electron impact has been assembled, including results up to December 2024. The data are organized according to the target atomic number and to the incident electron energy for elements ranging from H to U. From the 2509 reported data, more than 50% pertain only to 8 elements (H, He, Ar, Cr, Fe, Ni, Cu, and Ag). Conversely, 13 elements have only one or two results, and no data is available for 27 elements in the range of atomic numbers considered. Additionally, a further inspection of the database reveals that the majority of the data is concentrated within a small energy range, spanning up to four times the K-shell ionization energy. Finally, the different methods used to measure the ionization cross section are analyzed and a discussion about the main sources of uncertainties is presented.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"166 ","pages":"Article 101756"},"PeriodicalIF":4.1,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2025-08-22DOI: 10.1016/j.adt.2025.101747
L.Y. Li , X.L. Tu , J.T. Zhang , G.Q. Zhang
We compile and evaluate the matter (proton+neutron) distribution radii in nuclei determined by, e.g., hadron scattering, interaction (reaction) cross section, antiprotonic x-ray, parity-violating electron scattering, and dipole excitation experiments. With the evaluated matter radii of the 231 isotopes from 3He to 238U, the global trends of as a function are addressed, and a significant dependence of the coefficient on binding energy per nucleon is observed. In addition, the charge-symmetry breaking can also be revealed by the systematic trend of matter radius difference of mirror nuclei.
{"title":"Nuclear matter distribution radius compilation and evaluation: NMRCE2025","authors":"L.Y. Li , X.L. Tu , J.T. Zhang , G.Q. Zhang","doi":"10.1016/j.adt.2025.101747","DOIUrl":"10.1016/j.adt.2025.101747","url":null,"abstract":"<div><div>We compile and evaluate the matter (proton+neutron) distribution radii in nuclei determined by, e.g., hadron scattering, interaction (reaction) cross section, antiprotonic x-ray, parity-violating electron scattering, and dipole excitation experiments. With the evaluated matter radii <span><math><msubsup><mrow><mi>R</mi></mrow><mrow><mi>m</mi></mrow><mrow><mi>e</mi><mi>v</mi><mi>a</mi></mrow></msubsup></math></span> of the 231 isotopes from <sup>3</sup>He to <sup>238</sup>U, the global trends of <span><math><msubsup><mrow><mi>R</mi></mrow><mrow><mi>m</mi></mrow><mrow><mi>e</mi><mi>v</mi><mi>a</mi></mrow></msubsup></math></span> as a function <span><math><mrow><msub><mrow><mi>r</mi></mrow><mrow><mn>0</mn></mrow></msub><msup><mrow><mi>A</mi></mrow><mrow><mn>1</mn><mo>/</mo><mn>3</mn></mrow></msup></mrow></math></span> are addressed, and a significant dependence of the <span><math><msub><mrow><mi>r</mi></mrow><mrow><mn>0</mn></mrow></msub></math></span> coefficient on binding energy per nucleon <span><math><mrow><mi>B</mi><mi>E</mi><mo>/</mo><mi>A</mi></mrow></math></span> is observed. In addition, the charge-symmetry breaking can also be revealed by the systematic trend of matter radius difference of mirror nuclei.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"166 ","pages":"Article 101747"},"PeriodicalIF":4.1,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2025-07-05DOI: 10.1016/j.adt.2025.101732
Ben Ohayon
I present a critical review of absolute root-mean-square charge radii of stable nuclei from to , which includes a previously overlooked uncertainty in the combined analysis of muonic x-ray and electron scattering experiments. From these reference radii and isotope shift measurements, I obtain those of 12 mirror pairs with a traceable and realistic uncertainty budget. The difference in radii between mirror nuclei is found to be proportional to the isospin asymmetry, confirming recent calculations by Novario et al. (2023). Assuming that this linear relation holds across the nuclear chart, the fitted proportionality constant, combined with the revised known radii, predicts the radii of 73 previously unknown mirror partners. These are useful e.g., for benchmarking atomic and nuclear theory, calibrating entire chains, and as an input to nuclear beta-decay calculations. The radii of nuclei are interpolated assuming negligible isospin symmetry breaking. This completes a model-independent, high-precision extraction of the charge and weak radii of all nuclei involved in the test of the unitarity of the CKM matrix.
{"title":"Critical evaluation of reference charge radii and applications in mirror nuclei","authors":"Ben Ohayon","doi":"10.1016/j.adt.2025.101732","DOIUrl":"10.1016/j.adt.2025.101732","url":null,"abstract":"<div><div>I present a critical review of absolute root-mean-square charge radii of stable nuclei from <span><math><mrow><mi>Z</mi><mo>=</mo><mn>3</mn></mrow></math></span> to <span><math><mrow><mi>Z</mi><mo>=</mo><mn>32</mn></mrow></math></span>, which includes a previously overlooked uncertainty in the combined analysis of muonic x-ray and electron scattering experiments. From these <em>reference radii</em> and isotope shift measurements, I obtain those of 12 mirror pairs with a traceable and realistic uncertainty budget. The difference in radii between mirror nuclei is found to be proportional to the isospin asymmetry, confirming recent calculations by Novario et al. (2023). Assuming that this linear relation holds across the nuclear chart, the fitted proportionality constant, combined with the revised known radii, predicts the radii of 73 previously unknown mirror partners. These are useful e.g., for benchmarking atomic and nuclear theory, calibrating entire chains, and as an input to nuclear beta-decay calculations. The radii of <span><math><mrow><mo>(</mo><mi>T</mi><mo>=</mo><mn>1</mn><mo>,</mo><msub><mrow><mi>T</mi></mrow><mrow><mi>z</mi></mrow></msub><mo>=</mo><mn>0</mn><mo>)</mo></mrow></math></span> nuclei are interpolated assuming negligible isospin symmetry breaking. This completes a model-independent, high-precision extraction of the charge and weak radii of all nuclei involved in the test of the unitarity of the CKM matrix.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"165 ","pages":"Article 101732"},"PeriodicalIF":2.7,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2025-06-24DOI: 10.1016/j.adt.2025.101746
Valdas Jonauskas
Electron-impact ionization cross sections are studied for energy levels of the ground configuration of Ne using the scaled distorted wave (DW) approximation. This approximation has been previously applied to analyze the electron-impact ionization of neutral atoms and nearly neutral ions, as the DW approximation often provides overestimated data compared to measurements. Current study includes both direct and indirect ionization processes. Convergence of the excitation-autoionization channels is evaluated by analyzing excitations up to shells with the principal quantum numbers . The study shows that contribution of the indirect process reaches 16%–24% of the total ionization cross sections for the energy levels of the ground configuration. Good agreement of the theoretical data with the available measurements is obtained.
{"title":"Electron-impact single ionization for Ne2+","authors":"Valdas Jonauskas","doi":"10.1016/j.adt.2025.101746","DOIUrl":"10.1016/j.adt.2025.101746","url":null,"abstract":"<div><div><span>Electron-impact ionization cross sections are studied for energy levels of the ground configuration of Ne</span><span><math><msup><mrow></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup></math></span><span> using the scaled distorted wave (DW) approximation. This approximation has been previously applied to analyze the electron-impact ionization of neutral atoms and nearly neutral ions, as the DW approximation often provides overestimated data compared to measurements. Current study includes both direct and indirect ionization processes. Convergence of the excitation-autoionization channels is evaluated by analyzing excitations up to shells with the principal quantum numbers </span><span><math><mrow><mi>n</mi><mo>⩽</mo><mn>20</mn></mrow></math></span>. The study shows that contribution of the indirect process reaches 16%–24% of the total ionization cross sections for the energy levels of the ground configuration. Good agreement of the theoretical data with the available measurements is obtained.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"166 ","pages":"Article 101746"},"PeriodicalIF":4.1,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 : 2025-06-18DOI: 10.1016/j.adt.2025.101736
M.R. Mumpower , T. Kawano , O. Korobkin , G.W. Misch , T.M. Sprouse
The accurate description of nuclear -decay has far-reaching consequences for applications spanning nuclear reactors to the creation of heavy elements in astrophysical environments. We present the nuclear particle spectra associated with the -decay of neutron-rich nuclei calculated with the well benchmarked coupled Quasi-particle Random Phase Approximation and Hauser–Feshbach (QRPA+HF) model. This approach begins with the population of the daughter nucleus via semi-microscopic Gamow-Teller or First-Forbidden strength distributions (QRPA) and follows the statistical de-excitation (HF) until the initial available excitation energy is exhausted. At each stage of de-excitation the emission by neutrons and -rays is considered obeying quantum mechanical selection rules. For completeness we also provide parsed Auger and Internal Conversion (IC) electron spectra from Evaluated Nuclear Data Files (ENDF). Our results are tabulated and provided in parsable ASCII formatted tables that are suitable for inclusion in various applications.
{"title":"Nuclear β−-decay with statistical de-excitation","authors":"M.R. Mumpower , T. Kawano , O. Korobkin , G.W. Misch , T.M. Sprouse","doi":"10.1016/j.adt.2025.101736","DOIUrl":"10.1016/j.adt.2025.101736","url":null,"abstract":"<div><div>The accurate description of nuclear <span><math><msup><mrow><mi>β</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span>-decay has far-reaching consequences for applications spanning nuclear reactors to the creation of heavy elements in astrophysical environments. We present the nuclear particle spectra associated with the <span><math><mi>β</mi></math></span>-decay of neutron-rich nuclei calculated with the well benchmarked coupled Quasi-particle Random Phase Approximation and Hauser–Feshbach (QRPA+HF) model. This approach begins with the population of the daughter nucleus via semi-microscopic Gamow-Teller or First-Forbidden strength distributions (QRPA) and follows the statistical de-excitation (HF) until the initial available excitation energy is exhausted. At each stage of de-excitation the emission by neutrons and <span><math><mi>γ</mi></math></span>-rays is considered obeying quantum mechanical selection rules. For completeness we also provide parsed Auger and Internal Conversion (IC) electron spectra from Evaluated Nuclear Data Files (ENDF). Our results are tabulated and provided in parsable ASCII formatted tables that are suitable for inclusion in various applications.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"165 ","pages":"Article 101736"},"PeriodicalIF":2.7,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
This work is an update of the 2000 publication of magnetic-rotational bands by Amita et al. [1], followed by an unpublished update of 2006 [2], and reviews detailed experimental data extracted from original publications for 228 magnetic-rotational (MR or Shears) structures spread over 117 nuclides, and 40 antimagnetic-rotational (AMR) structures in 28 nuclei, with a brief commentary about each band. Many of these nuclei are located at or near the semi-magic nucleon numbers, mostly for protons. For example, 88 MR bands are currently known for the Pb (Z=82) nuclei, and 29 AMR band in Pd, Cd and In nuclei. It is interesting that the proton magic numbers appear to play a major role in the MR phenomenon, which seems less well understood. A brief discussion of the salient features of the MR and AMR bands and their theoretical interpretation has been presented in the present review. The tables contain gamma-ray energies, associated level energies with spins and parities, level lifetimes, B(M1), B(E2), and B(M1)/B(E2) ratios and probable spherical quasiparticle configurations. We find that many bands claimed in the literature as MR and AMR bands still have tentative assignments, as level lifetimes, thus B(M1) and B(E2) values, for a large number of MR and AMR bands, which can potentially provide critical criteria for firm identification of such structures, are lacking. Additionally, theoretical model calculations for many of these bands, which could provide insight for a better description of nuclear structure, are also lacking in literature. While this review is mainly based on original research articles, nuclear structure databases ENSDF [3], XUNDL [4], and NSR [5] have been consulted for completeness. The literature cut-off date March 31, 2025.
{"title":"Review of magnetic- and antimagnetic-rotational structures in nuclei","authors":"Sushil Kumar , Sukhjeet Singh , Balraj Singh , Amita , Ashok Kumar Jain","doi":"10.1016/j.adt.2025.101735","DOIUrl":"10.1016/j.adt.2025.101735","url":null,"abstract":"<div><div>This work is an update of the 2000 publication of magnetic-rotational bands by Amita et al. [1], followed by an unpublished update of 2006 [2], and reviews detailed experimental data extracted from original publications for 228 magnetic-rotational (MR or Shears) structures spread over 117 nuclides, and 40 antimagnetic-rotational (AMR) structures in 28 nuclei, with a brief commentary about each band. Many of these nuclei are located at or near the semi-magic nucleon numbers, mostly for protons. For example, 88 MR bands are currently known for the Pb (Z=82) nuclei, and 29 AMR band in Pd, Cd and In nuclei. It is interesting that the proton magic numbers appear to play a major role in the MR phenomenon, which seems less well understood. A brief discussion of the salient features of the MR and AMR bands and their theoretical interpretation has been presented in the present review. The tables contain gamma-ray energies, associated level energies with spins and parities, level lifetimes, B(M1), B(E2), and B(M1)/B(E2) ratios and probable spherical quasiparticle configurations. We find that many bands claimed in the literature as MR and AMR bands still have tentative assignments, as level lifetimes, thus B(M1) and B(E2) values, for a large number of MR and AMR bands, which can potentially provide critical criteria for firm identification of such structures, are lacking. Additionally, theoretical model calculations for many of these bands, which could provide insight for a better description of nuclear structure, are also lacking in literature. While this review is mainly based on original research articles, nuclear structure databases ENSDF [3], XUNDL [4], and NSR [5] have been consulted for completeness. The literature cut-off date March 31, 2025.</div></div>","PeriodicalId":55580,"journal":{"name":"Atomic Data and Nuclear Data Tables","volume":"165 ","pages":"Article 101735"},"PeriodicalIF":2.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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