Nuclear Physics A最新文献

{"title":"Inclusive and exclusive breakup studies in 10B+209Bi system","authors":"Prabhat Mishra ,&nbsp;V.V. Parkar ,&nbsp;S.K. Pandit ,&nbsp;Satbir Kaur ,&nbsp;Arati Chavan ,&nbsp;K. Mahata ,&nbsp;A. Shrivastava ,&nbsp;K. Ramachandran ,&nbsp;Vineet Kumar ,&nbsp;Sangeeta Dhuri ,&nbsp;Prasanna M ,&nbsp;S. Rathi","doi":"10.1016/j.nuclphysa.2025.123264","DOIUrl":"10.1016/j.nuclphysa.2025.123264","url":null,"abstract":"<div><div>Elastic scattering and various particle (<span><math><mi>α</mi></math></span>, <span><math><msup><mrow></mrow><mrow><mn>6</mn><mo>,</mo><mn>7</mn></mrow></msup></math></span>Li, <span><math><msup><mrow></mrow><mrow><mn>9</mn><mo>,</mo><mn>10</mn></mrow></msup></math></span>Be, and <span><math><msup><mrow></mrow><mn>11</mn></msup></math></span>B) production angular distributions have been measured with <span><math><msup><mrow></mrow><mn>10</mn></msup></math></span>B projectile on <span><math><msup><mrow></mrow><mn>209</mn></msup></math></span>Bi target at 54 MeV beam energy. The optical model calculation was performed for the elastic scattering angular distribution and the reaction cross section was estimated. The <span><math><mi>α</mi></math></span> particle production cross section was found to be dominant than other particles production. The sum of measured particle production cross sections and the reported value of complete fusion cross section [1] is found to match reasonably well with the estimated reaction cross section. Charged particle coincidence analysis was also performed to identify various breakup and transfer followed by breakup channels.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1065 ","pages":"Article 123264"},"PeriodicalIF":2.5,"publicationDate":"2025-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322068","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":"Quarkonia spectrum and wave functions with different trial basis in the potential model approach","authors":"David Molina ,&nbsp;Cristian Gutiérrez Gómez","doi":"10.1016/j.nuclphysa.2025.123253","DOIUrl":"10.1016/j.nuclphysa.2025.123253","url":null,"abstract":"<div><div>A numerical analysis based on the variational approach, using three different bases within a non-relativistic formalism, is performed to calculate the spectrum and wave functions of hydrogen atom and charmonium systems. Specifically, the Harmonic Oscillator, Generalized Harmonic Oscillator, and Gaussian bases are considered for this analysis. For the charmonium system, a non-relativistic kinetic energy is employed and the quark-antiquark interaction is represented by the Cornell potential plus the hyperfine interaction. The advantages of each basis are compared, with a focus on the spectrum and wave functions of the ground state and some excited states.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1065 ","pages":"Article 123253"},"PeriodicalIF":2.5,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270253","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":"Lifetime measurements with fast timing scintillation detectors at VECC, Kolkata","authors":"T. Bhattacharjee ,&nbsp;A. Pal ,&nbsp;D. Kumar ,&nbsp;S. Basak ,&nbsp;S.S. Alam","doi":"10.1016/j.nuclphysa.2025.123254","DOIUrl":"10.1016/j.nuclphysa.2025.123254","url":null,"abstract":"<div><div>The developments on lifetime measurements with fast timing scintillation detectors at VECC, Kolkata has been discussed. Different aspects of the <span><math><mrow><mi>γ</mi><mo>−</mo><mi>γ</mi></mrow></math></span> fast timing facility VENTURE (<u>VE</u>CC array for <u>N</u>uclear fast <u>T</u>iming and ang<u>U</u>lar cor<u>RE</u>lation studies) has been outlined in the light of level lifetime measurement with electronic fast timing technique. The exotic structures of the nuclei with A<span><math><mo>∼</mo></math></span> 130 and A<span><math><mo>∼</mo></math></span> 150, studied using the fast timing setups, have been elaborated. The plan for future development of the second phase of VENTURE, i.e. VENTURE-2.0 has been shown along with its progress till date.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1065 ","pages":"Article 123254"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270252","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 7Be(d, α)5Li(p α) and 7Be(d, p)8Be*(p 7Li) reactions at 5 MeV/u","authors":"S. Samanta ,&nbsp;D. Gupta ,&nbsp;Sk. M. Ali ,&nbsp;R. Mitra ,&nbsp;K. Kundalia ,&nbsp;S. Maity ,&nbsp;N. Ghosh ,&nbsp;S.K. Saha ,&nbsp;O. Tengblad ,&nbsp;A. Perea ,&nbsp;I. Martel ,&nbsp;J. Cederkall","doi":"10.1016/j.nuclphysa.2025.123249","DOIUrl":"10.1016/j.nuclphysa.2025.123249","url":null,"abstract":"<div><div>The <span><math><msup><mrow></mrow><mn>7</mn></msup></math></span>Be(<em>d</em>, <span><math><mrow><mrow><mi>α</mi><mo>)</mo></mrow><msup><mrow></mrow><mn>5</mn></msup></mrow></math></span>Li and <span><math><msup><mrow></mrow><mn>7</mn></msup></math></span>Be(<em>d, p</em>)<span><math><msup><mrow></mrow><mn>8</mn></msup></math></span>Be<span><math><msup><mrow></mrow><mo>*</mo></msup></math></span>(<em>p</em> <span><math><msup><mrow></mrow><mn>7</mn></msup></math></span>Li) reactions are studied at 5 MeV/u in the context of the cosmological lithium problem. This work aims to probe the contribution of <span><math><msup><mrow></mrow><mn>7</mn></msup></math></span>Be destruction mechanisms, particularly through channels that populate intermediate unbound states of <span><math><msup><mrow></mrow><mn>5</mn></msup></math></span>Li and <span><math><msup><mrow></mrow><mn>8</mn></msup></math></span>Be. The contribution of <span><math><msup><mrow></mrow><mn>7</mn></msup></math></span>Be(<em>d</em>, <span><math><mi>α</mi></math></span>)<span><math><msup><mrow></mrow><mn>5</mn></msup></math></span>Li(<em>p</em> <span><math><mi>α</mi></math></span>) reaction is separated from the <span><math><msup><mrow></mrow><mn>7</mn></msup></math></span>Be(<em>d</em>, <em>p</em>)<span><math><msup><mrow></mrow><mn>8</mn></msup></math></span>Be<span><math><mrow><msup><mrow></mrow><mo>*</mo></msup><mrow><mo>(</mo><mn>2</mn><mi>α</mi><mo>)</mo></mrow></mrow></math></span> reaction. The <span><math><msup><mrow></mrow><mn>7</mn></msup></math></span>Be(<em>d, p</em>)<span><math><msup><mrow></mrow><mn>8</mn></msup></math></span>Be<span><math><msup><mrow></mrow><mo>*</mo></msup></math></span>(<em>p</em><span><math><msub><mrow></mrow><mn>1</mn></msub></math></span> <span><math><msup><mrow></mrow><mn>7</mn></msup></math></span>Li<span><math><msup><mrow></mrow><mo>*</mo></msup></math></span>) channel is also identified and is useful for an indirect study of the <span><math><msup><mrow></mrow><mn>7</mn></msup></math></span>Be(<em>n, p</em><span><math><mrow><msub><mrow></mrow><mn>1</mn></msub><mrow><mo>)</mo></mrow><msup><mrow></mrow><mn>7</mn></msup></mrow></math></span>Li<span><math><msup><mrow></mrow><mo>*</mo></msup></math></span> reaction.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1065 ","pages":"Article 123249"},"PeriodicalIF":2.5,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322071","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":"Breakup and isotopic effects in the scattering of 6,7,8Li projectiles from a 9Be target","authors":"D.S. Valiolda ,&nbsp;D.M. Janseitov ,&nbsp;K. Mendibayev ,&nbsp;A. Azhibekov ,&nbsp;G. Saidullaeva ,&nbsp;Nuha Mutairi ,&nbsp;B. Alshahrani ,&nbsp;Sh. Hamada ,&nbsp;Awad A. Ibraheem","doi":"10.1016/j.nuclphysa.2025.123252","DOIUrl":"10.1016/j.nuclphysa.2025.123252","url":null,"abstract":"<div><div>We reanalyze elastic angular distributions (ADs) for ^6,7,8Li + ⁹Be scattering in the 11–30 MeV energy range using semi-microscopic potentials. This study examines how weakly bound (WB) projectiles affect elastic scattering, focusing on breakup effects and isotopic dependencies. Through systematic tests of double-folding potentials (SPP, BDM3Y1, CDM3Y1, and CDM3Y6), we identify distinct behaviors: ⁶Li shows enhanced breakup due to its low binding energy (1.47 MeV), whereas ⁸Li’s neutron-halo structure promotes transfer channels. The persistent imaginary potential near the Coulomb barrier confirms the breakup threshold anomaly (BTA). These results improve our understanding of nuclear reaction dynamics and have implications for astrophysical processes involving light nuclei.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1065 ","pages":"Article 123252"},"PeriodicalIF":2.5,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223241","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":"Low-j rotational bands in 127Xe","authors":"S. Chakraborty ,&nbsp;S. Bhattacharyya ,&nbsp;S.S. Nayak ,&nbsp;Soumik Bhattacharya ,&nbsp;G. Mukherjee ,&nbsp;Snigdha Pal ,&nbsp;S. Panwar ,&nbsp;Suchorita Paul ,&nbsp;S. Jehangir ,&nbsp;G.H. Bhat ,&nbsp;J.A. Sheikh ,&nbsp;C. Majumder ,&nbsp;A. Sharma ,&nbsp;Pankaj K. Giri ,&nbsp;R. Raut ,&nbsp;S.S. Ghugre","doi":"10.1016/j.nuclphysa.2025.123251","DOIUrl":"10.1016/j.nuclphysa.2025.123251","url":null,"abstract":"<div><div>Low-lying one-quasineutron bands, primarily associated with the low-<em>j</em> <span><math><mrow><mi>ν</mi><msub><mi>s</mi><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span> and <span><math><mrow><mi>ν</mi><msub><mi>d</mi><mrow><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span> quasiparticle configurations, have been investigated by means of in-beam <span><math><mi>γ</mi></math></span>-ray spectroscopy. Excited states were populated through the bombardment of a ²H beam with an energy of 15 MeV on an elemental ¹²⁷I target. This study confirms the previously identified, feebly populated unfavoured signature partner of the <span><math><mrow><mi>ν</mi><msub><mi>d</mi><mrow><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span> band, and provides firm spin and parity assignments for two low-lying states within this band. Theoretical calculations using the Triaxial Projected Shell Model reproduce the experimental observations well.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1065 ","pages":"Article 123251"},"PeriodicalIF":2.5,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270254","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":"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":"Compound and non-compound nuclear fusion using forward recoil range distributions of evaporation residues produced in 18O+154Sm system","authors":"Rajesh K. Sahoo ,&nbsp;Dharmendra Singh ,&nbsp;Amritraj Mahato ,&nbsp;Pankaj K. Giri ,&nbsp;Nitin Sharma ,&nbsp;Lupteindu Chhura ,&nbsp;Rahul Mahato ,&nbsp;Sneha B. Linda ,&nbsp;Harish Kumar ,&nbsp;Suhail A. Tali ,&nbsp;Rahbar Ali ,&nbsp;M. Afzal Ansari ,&nbsp;R. Kumar ,&nbsp;S. Muralithar ,&nbsp;R.P. Singh","doi":"10.1016/j.nuclphysa.2025.123245","DOIUrl":"10.1016/j.nuclphysa.2025.123245","url":null,"abstract":"&lt;div&gt;&lt;div&gt;The study investigates partial linear momentum transfer in the non-compound nuclear fusion (NCNF) process by analyzing the forward recoil range distributions (FRRDs) of evaporation residues (ERs) produced in the &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mn&gt;18&lt;/mn&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;O+&lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mn&gt;154&lt;/mn&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;Sm system at projectile energy &lt;span&gt;&lt;math&gt;&lt;mo&gt;≈&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; 5.27 MeV/nucleon. The ERs formed through xn and pxn evaporation channels exhibit single-peaked gaussian distributions in forward recoil ranges while their range-integrated cross sections alines well with theoretical prediction of PACE-4 code. These results show the signature of complete momentum transfer and formation of a compound nucleus &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mn&gt;172&lt;/mn&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;Yb*. However, ERs produced via &lt;span&gt;&lt;math&gt;&lt;mi&gt;α&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt; spectator channels shows single peaked gaussian distribution in forward recoil ranges but with a shorter mean ranges and larger cross sections than theoretical predictions. This result suggests that partial momentum transfer results from the breakup of &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mn&gt;18&lt;/mn&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;O into &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mn&gt;14&lt;/mn&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;C+&lt;span&gt;&lt;math&gt;&lt;mi&gt;α&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt;, contributing to the formation of an intermediate &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mn&gt;168&lt;/mn&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;Er* composite system. To investigate isotopic effects on NCNF dynamics, reactions induced by &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mn&gt;16&lt;/mn&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;O and &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mn&gt;18&lt;/mn&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;O projectiles were compared within the framework of Z&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mi&gt;P&lt;/mi&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;Z&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; and total asymmetry (&lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mi&gt;μ&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;mi&gt;m&lt;/mi&gt;&lt;/mrow&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt;). At energies &lt;span&gt;&lt;math&gt;&lt;mo&gt;≈&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; 10&lt;span&gt;&lt;math&gt;&lt;mo&gt;%&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; above the coulomb barrier, both projectiles exhibit comparable NCNF contributions. However, at projectile energies &lt;span&gt;&lt;math&gt;&lt;mo&gt;≥&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; 30&lt;span&gt;&lt;math&gt;&lt;mo&gt;%&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; above the Coulomb barrier, &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mn&gt;18&lt;/mn&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;O exhibits a significantly higher NCNF contribution as compare to &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mn&gt;16&lt;/mn&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;O. Further, the critical angular momentum increases exponentially with both Z&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mi&gt;P&lt;/mi&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;Z&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; and &lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mi&gt;μ&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;mi&gt;m&lt;/mi&gt;&lt;/mrow&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt;, establishing these parameters as key factors in onset of the NCNF process. Additionally, the study finds also that fusion suppression depends on projectile’s &lt;span&gt;&lt;math&gt;&lt;mi&gt;α&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt;-separation energy. A generalized expressio","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123245"},"PeriodicalIF":2.5,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219896","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}