Nuclear Physics A最新文献

{"title":"Symmetry energy and its correlations with the nuclear structure properties of Z=40 isotopic series at finite temperature","authors":"Abdullah Modabbir ,&nbsp;Abdul Quddus ,&nbsp;Shakeb Ahmad","doi":"10.1016/j.nuclphysa.2025.123250","DOIUrl":"10.1016/j.nuclphysa.2025.123250","url":null,"abstract":"<div><div>Symmetry energy is an important quantity in studying the nuclear structure, dynamics of heavy-ion reactions, and physics of neutron stars. The equation of state of asymmetric nuclear matter is limited due to the undetermined symmetry energy and lack of initial constraints on the nuclear matter (NM), leading to a study of the symmetry energy of NM. In this work, we have studied the temperature-dependent nuclear symmetry energy (S) of Zr isotopic series with N=34-86 along with its volume (<span><math><msub><mi>S</mi><mi>V</mi></msub></math></span>) and surface components (<span><math><msub><mi>S</mi><mi>S</mi></msub></math></span>) using the Coherent Density Fluctuation Model (CDFM). The nuclear densities used as input to CDFM are calculated along with the bulk properties at finite temperature within the temperature-dependent Relativistic Mean Field Model using NL3 and IOPB-I interactions. The ground state bulk properties are in good concurrence with the available experimental data. The binding energy per nucleon and neutron pairing energy decrease, and the radial density distribution increases with a rise in temperature (T). The deformed nuclei with an increase in T become spherical at and beyond the critical temperature. The bulk properties exhibit the magicity of N=40 along with the standard neutron magic numbers in this range at T=0 MeV. The nuclear symmetry energy, its surface and volume components, and their ratios <span><math><mi>κ</mi></math></span> show a similar behavior change as that occurring in the nature of deformation with the neutron number N. As IOPB-I interaction predicts a softer equation of state than NL3 (stiffer), the symmetry energy of the nuclei corresponding to IOPB-I is comparatively less. The symmetry energy of Zr isotopic series is found to be correlated with nuclear structure properties at finite temperature. The symmetry energy is maximum at N=50, even at finite temperature, as this isotope possesses the highest stability in the Zr series. This study will help in the production of exotic nuclei and the understanding of heavy-ion reactions.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1065 ","pages":"Article 123250"},"PeriodicalIF":2.5,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"The surrogate reactions for the neutron-capture rate using OEDO and SHARAQ in RIBF","authors":"N. Imai ,&nbsp;M. Dozono ,&nbsp;S. Bae ,&nbsp;S. Michimasa ,&nbsp;T. Sumikama ,&nbsp;S. Ota ,&nbsp;S. Hayakawa ,&nbsp;J.W. Hwang ,&nbsp;K. Iribe ,&nbsp;C. Iwamoto ,&nbsp;S. Kawase ,&nbsp;K. Kawata ,&nbsp;N. Kitamura ,&nbsp;S. Masuoka ,&nbsp;K. Nakano ,&nbsp;P. Schrock ,&nbsp;D. Suzuki ,&nbsp;R. Tsunoda ,&nbsp;K. Wimmer ,&nbsp;T. Chillery ,&nbsp;S. Shimoura","doi":"10.1016/j.nuclphysa.2025.123248","DOIUrl":"10.1016/j.nuclphysa.2025.123248","url":null,"abstract":"<div><div>To determine the neutron capture rates of radioactive nuclei, we have developed an experimental technique using surrogate reactions, specifically the (<em>d, p</em>) reaction in inverse kinematics. The gamma-emission probabilities from unbound states were deduced by identifying the outgoing reaction residues, instead of detecting the de-excitation <span><math><mi>γ</mi></math></span> rays from the compound states. Such experiments have become feasible through the use of the OEDO device, which enables beam deceleration and focusing, and the SHARAQ spectrometer at RIBF. We applied this technique to measure the neutron capture rates of <span><math><msup><mrow></mrow><mn>79</mn></msup></math></span>Se for nuclear transmutation data, and of <span><math><msup><mrow></mrow><mn>130</mn></msup></math></span>Sn for studies related to the <span><math><mi>r</mi></math></span>-process. In this contribution, we discuss the neutron-capture cross sections of <span><math><msup><mrow></mrow><mn>79</mn></msup></math></span>Se using the surrogate ratio method, and introduce the updated experimental setup for the <span><math><msup><mrow></mrow><mn>130</mn></msup></math></span>Sn measurement.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123248"},"PeriodicalIF":2.5,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Beta decay properties of neutron-rich Co, Ni, Cu and Zn isotopes","authors":"Jameel-Un Nabi ,&nbsp;Asim Ullah ,&nbsp;Mureed Abbas Qammar","doi":"10.1016/j.nuclphysa.2025.123237","DOIUrl":"10.1016/j.nuclphysa.2025.123237","url":null,"abstract":"<div><div>Accurate and reliable assessments of the <em>β</em>-decay characteristics of neutron-rich nuclei are essential for gaining a deeper insight into the supernova explosions and related nucleosynthesis processes, including the <em>r</em>-process. We calculated the <em>β</em>-decay half-lives, Gamow-Teller distributions and branching ratios of neutron-rich cobalt, nickel and copper isotopes. Stellar weak interaction rates for a total of thirty-six neutron-rich nuclei (⁷²⁻⁷⁹Co, ⁷⁴⁻⁸³Ni, ⁷⁸⁻⁸⁶Cu and ⁸⁰⁻⁸⁸Zn) were calculated using the proton-neutron quasi-particle random phase approximation (pn-QRPA) model. The computed half-lives are in better agreement with the measured data (having mean deviation of <span><math><mover><mrow><mi>r</mi></mrow><mrow><mo>¯</mo></mrow></mover></math></span> = 1.45) as compared to previous results. The stellar <em>β</em>-decay rates are bigger than the independent particle model rates at low temperature and density values. For high-temperature and high-density zones, the previous rates are up to an order of magnitude bigger than our results. The findings of the current investigation may prove useful for simulation of post-silicon burning evolution of stars and nucleosynthesis calculations.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123237"},"PeriodicalIF":2.5,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145045440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Study of nuclear structure properties of some neutron-rich even-even Titanium isotopes","authors":"Saima Sadiq,&nbsp;Rani Devi,&nbsp;S.K. Khosa","doi":"10.1016/j.nuclphysa.2025.123247","DOIUrl":"10.1016/j.nuclphysa.2025.123247","url":null,"abstract":"<div><div>The large-scale shell-model calculations have been performed for neutron-rich even-even titanium isotopes by employing two model spaces: <em>pf</em> (I) and <em>fpg</em>_<em>9/2</em> (II) and various effective interactions. The energy spectra and electromagnetic quantities have been obtained and compared with the available experimental data. The theoretical results on excitation energies and B(E2) values of <span><math><msubsup><mn>2</mn><mn>1</mn><mo>+</mo></msubsup></math></span> state confirm the existence of subshell closure at <em>N</em> = 32 and the absence of subshell closure at <em>N</em> = 34. Besides, the B(E2) and B(M1) values of excited states are also predicted for which experimental data are not available. These predictions may serve as a valuable reference for future experimental comparisons.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123247"},"PeriodicalIF":2.5,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Connecting neutron skin thickness and neutron star observables through isovector scalar delta meson in relativistic framework","authors":"Sunil Kumar,&nbsp;Mukul Kumar,&nbsp;Raj K. Jagota,&nbsp;Shashi K. Dhiman","doi":"10.1016/j.nuclphysa.2025.123238","DOIUrl":"10.1016/j.nuclphysa.2025.123238","url":null,"abstract":"<div><div>Recent developments in the parity-violating electron scattering experiments on ⁴⁸Ca (CREX) and for ²⁰⁸Pb (PREX-II) has provided new insight on the neutron skin thickness. These findings reveal several viewpoints on nuclear matter parameters (NMPs) such as symmetry energy (J) and its linear density dependency (L), which are directly related to the equation of state (EoS) of asymmetric dense matter. While PREX results lead to stiffer L and hence necessitate a stiffer EoS, the CREX experiments favor softer L and hence a softer EoS. Therefore, it is challenging to produce neutron skin of both (⁴⁸Ca and ²⁰⁸Pb) in relativistic mean field (RMF) models simultaneously. To address this issue, we propose relativistic interactions based on RMF model comprising of self and cross interactions of <em>σ</em>, <em>ω</em>, <em>ρ</em> and <em>δ</em> mesons. These interactions are consistent with the results of both experiments, and they accurately replicate experimental data related to the ground state properties, such as binding energies (BE) and charge radii (<span><math><msub><mrow><mi>r</mi></mrow><mrow><mi>c</mi><mi>h</mi></mrow></msub></math></span>), of both closed and open shell nuclei. We also compute the EoSs comprising of npe<em>μ</em> matter under <em>β</em>-equilibrium condition for the proposed interactions and hence calculate neutron star observables.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123238"},"PeriodicalIF":2.5,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145045330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Leptodermic corrections to the TOV equations and nuclear astrophysics within the effective surface approximation","authors":"A.G. Magner ,&nbsp;S.P. Maydanyuk ,&nbsp;A. Bonasera ,&nbsp;H. Zheng ,&nbsp;T. Depastas ,&nbsp;A.I. Levon ,&nbsp;U.V. Grygoriev","doi":"10.1016/j.nuclphysa.2025.123239","DOIUrl":"10.1016/j.nuclphysa.2025.123239","url":null,"abstract":"<div><div>The macroscopic model for a neutron star (NS) as a liquid drop at the equilibrium is used to extend the Tolman-Oppenheimer-Volkoff (TOV) equations taking into account the gradient terms responsible for the system surface. The parameters of the Schwarzschild metric in the spherical case are found with these surface corrections to the known leading (zero) order of the leptodermic approximation <span><math><mi>a</mi><mo>/</mo><mi>R</mi><mo>&lt;</mo><mo>&lt;</mo><mn>1</mn></math></span>, where <em>a</em> is the NS effective-surface (ES) thickness, and <em>R</em> is the effective NS radius. The energy density <span><math><mi>E</mi></math></span> is considered in a general form including the functions of the particle number density and of its gradient terms. The macroscopic gravitational component <span><math><mi>Φ</mi><mo>(</mo><mi>ρ</mi><mo>)</mo></math></span> of the energy density is taken into account in the simplest form as expansion in powers of <span><math><mi>ρ</mi><mo>−</mo><mover><mrow><mi>ρ</mi></mrow><mo>‾</mo></mover></math></span>, where <span><math><mover><mrow><mi>ρ</mi></mrow><mo>‾</mo></mover></math></span> is the saturation density, up to second order, in terms of its contributions to the separation particle energy and incompressibility. Density distributions <em>ρ</em> across the NS ES in the normal direction to the ES, which are derived in the simple analytical form at the same leading approximation, was used for the derivation of the modified TOV (MTOV) equations by accounting for their NS surface corrections. The MTOV equations are analytically solved at first order and the results are compared with the standard TOV approach of the zero order.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123239"},"PeriodicalIF":2.5,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 mass density effect of 27Al and 28Si nuclei in nuclear reactions","authors":"F.R. Vasconcelos,&nbsp;G.F.D. Abreu,&nbsp;E.N. Cardozo,&nbsp;J. Lubian","doi":"10.1016/j.nuclphysa.2025.123240","DOIUrl":"10.1016/j.nuclphysa.2025.123240","url":null,"abstract":"<div><div>In a recent study, diffuseness parameters of <span><math><mrow><msub><mi>a</mi><mi>m</mi></msub><mo>=</mo><mn>0.62</mn><mspace></mspace><mrow><mi>fm</mi></mrow></mrow></math></span> and <span><math><mrow><msub><mi>a</mi><mi>m</mi></msub><mo>=</mo><mn>0.65</mn><mspace></mspace><mrow><mi>fm</mi></mrow></mrow></math></span> were proposed for the nuclear matter density of <span><math><msup><mrow></mrow><mn>28</mn></msup></math></span>Si and <span><math><msup><mrow></mrow><mn>27</mn></msup></math></span>Al, respectively, based on the two-parameter Fermi distribution. These values exceed the systematic value <span><math><mrow><msub><mi>a</mi><mi>m</mi></msub><mo>=</mo><mn>0.56</mn><mspace></mspace><mrow><mi>fm</mi></mrow></mrow></math></span>, commonly adopted in the São Paulo potential. To assess the validity of the proposed parameters, we performed coupled-channel calculations for the systems <span><math><msup><mrow></mrow><mn>9</mn></msup></math></span>Be+<span><math><msup><mrow></mrow><mn>28</mn></msup></math></span>Si, <span><math><msup><mrow></mrow><mn>14</mn></msup></math></span>N+<span><math><msup><mrow></mrow><mn>28</mn></msup></math></span>Si, <span><math><msup><mrow></mrow><mn>13</mn></msup></math></span>C+<span><math><msup><mrow></mrow><mn>28</mn></msup></math></span>Si, <span><math><msup><mrow></mrow><mn>9</mn></msup></math></span>Be+<span><math><msup><mrow></mrow><mn>27</mn></msup></math></span>Al, <span><math><msup><mrow></mrow><mn>14</mn></msup></math></span>N+<span><math><msup><mrow></mrow><mn>27</mn></msup></math></span>Al, and <span><math><msup><mrow></mrow><mn>28</mn></msup></math></span>Si+<span><math><msup><mrow></mrow><mn>27</mn></msup></math></span>Al at energies 2-3 times the Coulomb barrier. The analyses were carried out using the FRESCO code, with the Sao Paulo Potential and Woods-Saxon potential used as the optical potential. A good description of elastic angular distributions was achieved with the systematic nuclear matter density diffuseness value of <span><math><mrow><msub><mi>a</mi><mi>m</mi></msub><mo>=</mo><mn>0.56</mn><mspace></mspace><mrow><mi>fm</mi></mrow></mrow></math></span>.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123240"},"PeriodicalIF":2.5,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Possible universal limit for valence parton distributions","authors":"Christopher Leon ,&nbsp;Misak Sargsian","doi":"10.1016/j.nuclphysa.2025.123243","DOIUrl":"10.1016/j.nuclphysa.2025.123243","url":null,"abstract":"<div><div>We report the observation of the existence of a possible universal limit for valence parton distributions that should exist once partonic degrees of freedom are relevant for high energy scattering from strongly interacting bound systems like a nucleon, meson or a few nucleon system at very short distances. Our observation is based on the notion that the Bjorken x weighted valence parton distribution function has a peak, <span><math><msub><mi>x</mi><mi>p</mi></msub></math></span>, that characterizes the average momentum fraction carried out by the valence quarks in the system. Within the residual mean-field model of the valence quark distribution we found that <span><math><msub><mi>x</mi><mi>p</mi></msub></math></span> has an upper limit: <span><math><mrow><msub><mi>x</mi><mi>p</mi></msub><mo>≤</mo><mfrac><mn>1</mn><mrow><mn>2</mn><mo>(</mo><msub><mi>n</mi><mi>V</mi></msub><mo>−</mo><mn>1</mn><mo>)</mo></mrow></mfrac></mrow></math></span>, where <span><math><msub><mi>n</mi><mi>V</mi></msub></math></span> is the number of valence quarks in the cluster embedded in the strongly interacting environment of the hadron. The existence of such a limit imposes a new constraint on choosing the starting resolution scale <span><math><msub><mi>Q</mi><mn>0</mn></msub></math></span> for PDFs. Our prediction for the nucleon is that <span><math><mrow><msub><mi>x</mi><mi>p</mi></msub><msub><mo>∣</mo><mrow><mi>Q</mi><mo>→</mo><msub><mi>Q</mi><mn>0</mn></msub></mrow></msub><mo>≤</mo><mfrac><mn>1</mn><mn>4</mn></mfrac></mrow></math></span>, which is in agreement with all the available valence PDFs that employ the standard approach for selecting starting <span><math><msub><mi>Q</mi><mn>0</mn></msub></math></span>. We also demonstrate how the existence of this limit can be used to verify the onset of quark-cluster structures in short range nucleon correlations in nuclei.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123243"},"PeriodicalIF":2.5,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Alpha process nucleosynthesis and sensitivity analysis in SiRoP","authors":"Jose Trujillo,&nbsp;Rachid Ouyed","doi":"10.1016/j.nuclphysa.2025.123242","DOIUrl":"10.1016/j.nuclphysa.2025.123242","url":null,"abstract":"<div><div>The r-process nucleosynthesis (in explosive astrophysical events) is responsible for about half of the heavy elements observed in the universe. However, r-process outputs in the literature are difficult to replicate and vary across studies due to differences in nuclear mass models or initial conditions (e.g., seed nuclei). We will review the SiRoP code for <span><math><mi>r</mi></math></span>-process nucleosynthesis, which now includes an alpha-capture module that allows for a variety of initial conditions and a nuclear sensitivity module to test how changes in nuclear masses affect <span><math><mi>r</mi></math></span>-process abundance patterns. Additionally, we will examine how different sensitivity metrics influence this behavior.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123242"},"PeriodicalIF":2.5,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145045441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Systematics of reduced B(E3) transition probabilities for E3 transitions in even-A nuclei in 50 ≤ Z ≤ 92 region","authors":"P.S. Rawat,&nbsp;S. Kumar","doi":"10.1016/j.nuclphysa.2025.123241","DOIUrl":"10.1016/j.nuclphysa.2025.123241","url":null,"abstract":"<div><div>In the nuclear landscape, many isomeric states near the shell closure decay via enhanced electric octupole <span><math><mrow><mo>(</mo><mi>E</mi><mn>3</mn><mo>)</mo></mrow></math></span> transitions. The enhancement in the transition strength is linked to the nuclear interactions between shell-model orbitals near the Fermi level that differ by <span><math><mrow><mstyle><mi>Δ</mi></mstyle><mi>j</mi><mo>=</mo><mspace></mspace><mstyle><mi>Δ</mi></mstyle><mi>l</mi><mo>=</mo><mn>3</mn></mrow></math></span>, involving high-<span><math><mi>j</mi></math></span> intruder orbitals. The present study investigates the systematics of reduced <span><math><mrow><mi>B</mi><mo>(</mo><mi>E</mi><mn>3</mn><mo>)</mo></mrow></math></span> transition probabilities in even-A nuclei with proton numbers <span><math><mrow><mi>Z</mi><mo>=</mo><mn>50</mn><mo>−</mo><mn>92</mn></mrow></math></span>. Experimental data were taken from the ENSDF, NSR and XUNDL databases. For recently measured <span><math><mrow><mi>E</mi><mn>3</mn></mrow></math></span> transitions, updated half-lives and branching ratios were used to determine refined <span><math><mrow><mi>B</mi><mo>(</mo><mi>E</mi><mn>3</mn><mo>)</mo></mrow></math></span> values, calculated using the RULER code. The observed systematic trend across various closed shells indicates that the octupole correlations are strongly developed in the heavier mass region. The transition rates were further analysed according to the type of <span><math><mrow><mi>E</mi><mn>3</mn></mrow></math></span> transition and their underlying configurations. The results reveal a clear pattern: nuclei with configurations involving octupole-driving orbitals show significantly enhanced <span><math><mrow><mi>B</mi><mo>(</mo><mi>E</mi><mn>3</mn><mo>)</mo></mrow></math></span> values, whereas the spin-flip and single-particle <span><math><mrow><mi>E</mi><mn>3</mn></mrow></math></span> transitions exhibit much weaker strengths.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123241"},"PeriodicalIF":2.5,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}