Nuclear Physics A最新文献

{"title":"Fragments features and Isoscaling in Ni+Ca systems at the entrance of Fermi energy domain","authors":"E. Geraci ,&nbsp;E. De Filippo ,&nbsp;G. Cardella ,&nbsp;M. Colonna ,&nbsp;E. Gambera ,&nbsp;B. Gnoffo ,&nbsp;C. Maiolino ,&nbsp;N.S. Martorana ,&nbsp;A. Pagano ,&nbsp;E.V. Pagano ,&nbsp;S. Pirrone ,&nbsp;G. Politi ,&nbsp;F. Rizzo ,&nbsp;P. Russotto ,&nbsp;M. Trimarchi ,&nbsp;S. Barlini ,&nbsp;R. Bougault ,&nbsp;G. Casini ,&nbsp;N. Le Neindre ,&nbsp;S. Piantelli","doi":"10.1016/j.nuclphysa.2025.123076","DOIUrl":"10.1016/j.nuclphysa.2025.123076","url":null,"abstract":"<div><div>First results on central collisions for ⁶²Ni+⁴⁸Ca system at 35 AMeV are presented, analyzing experimental data acquired with CHIMERA 4 π multidetector, installed at INFN-LNS in Italy.</div><div>The features of the reaction mechanisms involved, and the characteristics of the fragments produced in central collisions were analyzed for ⁶²Ni+⁴⁸Ca system and compared with the results obtained for ⁵⁸Ni+⁴⁰Ca at the same incident energy. The isoscaling properties of fragments produced were used to assess the hypothesis of thermal and chemical equilibrium of the sources formed in the two reactions.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123076"},"PeriodicalIF":1.7,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Probing heavy-ion fusion reaction 136Xe + 64Zn in inverse kinematics","authors":"J.T. Li ,&nbsp;N. Imai ,&nbsp;R. Yokoyama ,&nbsp;S. Michimasa ,&nbsp;T. Chillery ,&nbsp;R. Kojima ,&nbsp;S. Hanai ,&nbsp;N. Kitamura ,&nbsp;T. Saito ,&nbsp;D. Suzuki ,&nbsp;D. Nishimura ,&nbsp;M. Amitani ,&nbsp;C. Fukushima ,&nbsp;Y. Nakamura ,&nbsp;R. Kageyama ,&nbsp;J. Sonoda ,&nbsp;E. Takada ,&nbsp;S. Sakaguchi ,&nbsp;Z.G. Xiao","doi":"10.1016/j.nuclphysa.2025.123079","DOIUrl":"10.1016/j.nuclphysa.2025.123079","url":null,"abstract":"<div><div>An experiment using ¹³⁶Xe beam to bombard natural zinc (<span><math><msup><mrow></mrow><mrow><mi>n</mi><mi>a</mi><mi>t</mi></mrow></msup></math></span>Zn) target was performed at Heavy Ion Medical Accelerator in Chiba (HIMAC) to investigate the fusion reaction in the near-symmetric system. The fusion-evaporation cross sections were obtained by the direct measurement of <em>α</em>-decay spectroscopy of the evaporation residues. In this paper, the details of the experimental setup and the extracted excitation function are presented.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123079"},"PeriodicalIF":1.7,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Damping mechanism of the isoscalar giant monopole resonance in 58Ni","authors":"A. Bahini ,&nbsp;P. von Neumann-Cosel ,&nbsp;J. Carter ,&nbsp;I.T. Usman ,&nbsp;N.N. Arsenyev ,&nbsp;A.P. Severyukhin ,&nbsp;E. Litvinova ,&nbsp;R.W. Fearick ,&nbsp;R. Neveling ,&nbsp;P. Adsley ,&nbsp;N. Botha ,&nbsp;J.W. Brümmer ,&nbsp;L.M. Donaldson ,&nbsp;S. Jongile ,&nbsp;T.C. Khumalo ,&nbsp;M.B. Latif ,&nbsp;K.C.W. Li ,&nbsp;P.Z. Mabika ,&nbsp;P.T. Molema ,&nbsp;C.S. Moodley ,&nbsp;J.J. van Zyl","doi":"10.1016/j.nuclphysa.2025.123078","DOIUrl":"10.1016/j.nuclphysa.2025.123078","url":null,"abstract":"<div><div>Following the success achieved in explaining the origin of fine structure observed in the isoscalar giant quadrupole resonance (ISGQR) and the isovector giant dipole resonance (IVGDR), fine structure in the region of the isoscalar giant monopole resonance (ISGMR) were investigated using the wavelet analysis in order to investigate the role of different mechanisms contributing to its decay width. In this context, high-energy resolution ISGMR data on many nuclei were acquired at the iThemba Laboratory for Accelerator Based Sciences (iThemba LABS). The experimental scales extracted from these data are compared to different theoretical approaches performed in the framework of quasiparticle random phase approximation (QRPA) and beyond-QRPA including complex configurations using both non-relativistic and relativistic density functional theory. The role of Landau fragmentation was highlighted while the inclusion of coupling between one particle-one hole (1p-1h) and two particle-two hole (2p-2h) configurations modify the strength distributions and wavelet scales indicating the importance of the spreading width.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123078"},"PeriodicalIF":1.7,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768633","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":"Simulations of neutron unbound physics for Geant4","authors":"Nicholas Mendez ,&nbsp;Thomas Baumann ,&nbsp;Paul Guèye","doi":"10.1016/j.nuclphysa.2025.123077","DOIUrl":"10.1016/j.nuclphysa.2025.123077","url":null,"abstract":"<div><div>The study of neutron unbound systems via the invariant mass technique is the primary focus of the MoNA Collaboration, which built and operates the Modular Neutron Array (MoNA) and the Large multi-Institutional Scintillator Array (LISA) at FRIB. Advancements in nuclear structure from theory and experiment along the neutron dripline have presented opportunities to understand the nature of unbound systems in higher mass nuclei. The GEometry ANd Tracking (Geant4) platform has been used in high-energy and nuclear physics to simulate particle interactions with as much detail as the user desires. Geant4 currently does not have a physics class to simulate neutron unbound systems. Given the advancement of accelerator facilities and active searches along the neutron dripline, detailed simulations to study the breakup of neutron unbound systems, are necessary. The implementation of the breakup of neutron unbound systems in Geant4 will be presented.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123077"},"PeriodicalIF":1.7,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759676","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":"Proton inelastic scattering on 56Fe: Insights from the 9-MV Tandem Accelerator measurements @ IFIN-HH","authors":"A. Coman ,&nbsp;C. Borcea ,&nbsp;R. Borcea ,&nbsp;M. Boromiza ,&nbsp;S. Calinescu ,&nbsp;D. Chiriac ,&nbsp;C. Costache ,&nbsp;P. Dessagne ,&nbsp;I. Dinescu ,&nbsp;A. Farzanehpoor Alwars ,&nbsp;N. Florea ,&nbsp;A. Gandhi ,&nbsp;G. Henning ,&nbsp;M. Kavatsyuk ,&nbsp;M. Kerveno ,&nbsp;C. Mihai ,&nbsp;A. Negret ,&nbsp;A. Oprea ,&nbsp;C. Petrone ,&nbsp;A. Plompen ,&nbsp;G. Turturica","doi":"10.1016/j.nuclphysa.2025.123080","DOIUrl":"10.1016/j.nuclphysa.2025.123080","url":null,"abstract":"<div><div>Investigations into the inelastic scattering of neutrons and protons off ⁵⁶Fe are relevant both for the development of new nuclear facilities and also for obtaining a better understanding of nuclear reaction mechanisms. While a new experiment measuring the neutron inelastic cross section on ⁵⁶Fe at the Geel Electron Linear Accelerator (GELINA) neutron source of the EC-JRC, Geel (Belgium) is scheduled in the near future, a complementary proton-induced measurement was already performed at the 9-MV Tandem accelerator of IFIN-HH (Romania). The setup consisted of two HPGe detectors for <em>γ</em>-ray detection, and of a Faraday Cup coupled to a high-precision charge integrator for proton beam integration. This paper focuses on the IFIN-HH measurements presenting the experimental setup and particularities and the extracted results following proton inelastic scattering off three iron targets: 3.0 mg/cm² of <span><math><msup><mrow></mrow><mrow><mi>n</mi><mi>a</mi><mi>t</mi></mrow></msup></math></span>Fe and 0.6 and 3.3 mg/cm² of ⁵⁶Fe (enriched to 99.77%). We were able to measure the cross section for the first three most intense transitions arising from the inelastic channel on ⁵⁶Fe. We will also present a comparative analysis of our results with previously reported cross section data and <span>talys</span> 2.0 theoretical predictions - using both standard and tuned parameters for the nucleon-⁵⁶Fe optical model potential.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123080"},"PeriodicalIF":1.7,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rotational stability of magnetic field in rotating quark-gluon plasma","authors":"Aritra Das,&nbsp;Kirill Tuchin","doi":"10.1016/j.nuclphysa.2025.123075","DOIUrl":"10.1016/j.nuclphysa.2025.123075","url":null,"abstract":"<div><div>Relaxation of the magnetic field in rigidly rotating quark-gluon plasma is studied. It is shown that the infrared modes satisfying <span><math><mi>k</mi><mo>&lt;</mo><mo>|</mo><mi>m</mi><mo>|</mo><mi>Ω</mi></math></span> and <span><math><mi>k</mi><mo>&lt;</mo><mo>|</mo><mi>m</mi><mo>±</mo><mn>1</mn><mo>|</mo><mi>Ω</mi></math></span>, where integer <em>m</em> is the projection of the orbital angular momentum along the rotating axis and Ω is the angular velocity, are unstable. The instability onset time and the magnetic field growth rate are computed for a standard initial profile of the magnetic field. Given the present phenomenological values of Ω and electrical conductivity <em>σ</em> the instability is not expected to be a significant factor in the field's time evolution.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123075"},"PeriodicalIF":1.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759822","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":"Elastic scattering analysis of 10,11B+40Ca at 50 MeV using Woods-Saxon and folding potentials","authors":"Harun Al Rashid ,&nbsp;K. Kalita ,&nbsp;Amar Das ,&nbsp;Lakhyajit Sarma ,&nbsp;Nabendu K. Deb ,&nbsp;M. Bhuyan ,&nbsp;P. Sugathan ,&nbsp;Golda K.S. ,&nbsp;A. Jhingan ,&nbsp;N. Saneesh ,&nbsp;Mohit Kumar ,&nbsp;A. Parihari ,&nbsp;Honey Arora ,&nbsp;B.J. Roy ,&nbsp;J.J. Das","doi":"10.1016/j.nuclphysa.2025.123074","DOIUrl":"10.1016/j.nuclphysa.2025.123074","url":null,"abstract":"<div><div>An attempt has been made very recently to perform a scattering experiment on <span><math><mmultiscripts><mrow><mtext>B</mtext></mrow><mprescripts></mprescripts><none></none><mrow><mn>10</mn><mo>,</mo><mn>11</mn></mrow></mmultiscripts></math></span>+<span><math><mmultiscripts><mrow><mtext>Ca</mtext></mrow><mprescripts></mprescripts><none></none><mrow><mn>40</mn></mrow></mmultiscripts></math></span> systems at the energy of 50 MeV at General Purpose Scattering Chamber (GPSC) of Inter-University Accelerator Centre (IUAC), New Delhi, India. A comprehensive analysis of the elastic scattering data is carried out using different versions of optical potentials, such as the Woods-Saxon (WS) potential, the M3Y-Paris double-folding (DF) potential and the semi-microscopic Sao Paulo potential (SPP2). We have arrived at a new set of optical model (OM) parameters which are compared with the data obtained by Glover et al. (1980) at 46.6 MeV and 51.5 MeV. There is substantial change in the real and imaginary potential strengths when analyzed using WS potential. Both the systems exhibited absorption and showed structural differences between <span><math><mmultiscripts><mrow><mtext>B</mtext></mrow><mprescripts></mprescripts><none></none><mrow><mn>10</mn></mrow></mmultiscripts></math></span> and <span><math><mmultiscripts><mrow><mtext>B</mtext></mrow><mprescripts></mprescripts><none></none><mrow><mn>11</mn></mrow></mmultiscripts></math></span>, with the former having a deeper real potential and a more confined interaction region. With a combination M3Y-Paris (real) and WS Volume (imaginary) potential, experimental cross-sections are reproduced which also reveals the extended structure of <span><math><mmultiscripts><mrow><mtext>B</mtext></mrow><mprescripts></mprescripts><none></none><mrow><mn>11</mn></mrow></mmultiscripts></math></span>. SPP2 potential provides significant information on reaction dynamics providing larger proton and neutron radii of ¹¹B as compared to ¹⁰B. Finally, We extracted a new set of consistent OM parameters that is applicable in understanding the reaction dynamics of light-heavy ion interactions.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123074"},"PeriodicalIF":1.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738162","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":"Magnetic field at nucleus for ionized atoms","authors":"Andrzej Tucholski ,&nbsp;Zygmunt Patyk","doi":"10.1016/j.nuclphysa.2025.123073","DOIUrl":"10.1016/j.nuclphysa.2025.123073","url":null,"abstract":"<div><div>The determination of the magnetic field at the nucleus of ionized atoms was carried out and a linear dependence between the strength of the magnetic field at the nucleus and the nuclear effective charge divided by the principal quantum number was analyzed. The calculations of the magnetic field at the nucleus were done for a wide set of electron configurations within the framework of the relativistic Dirac-Hartree-Fock method. The results are compared to previously measured experimental <em>g</em>-factors.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123073"},"PeriodicalIF":1.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738161","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":"An improved unified fission model for α-decay half-lives","authors":"Fengzhu Xing ,&nbsp;Xiankai Le ,&nbsp;Nan Wang ,&nbsp;Yanzhao Wang","doi":"10.1016/j.nuclphysa.2025.123072","DOIUrl":"10.1016/j.nuclphysa.2025.123072","url":null,"abstract":"<div><div>An improved unified fission model (IMUFM) is developed for <em>α</em>-decay half-lives by introducing an analytical expression of the equivalent assault frequency and using a modified version of Woods-Sanox potential. The parameters of the analytical expression are determined by fitting the experimental <em>α</em>-decay half-lives from the ground state to ground state transitions. By comparing the agreement between the calculated ones and the experimental half-lives, it is found that the accuracy of IMUFM is improved significantly than its predecessor. Then the IMUFM is extended to study the <em>α</em>-decay properties of the superheavy nuclei with Z=118-120 isotopes. The <em>α</em>-decay half-lives of these nuclei are predicted within the IMUFM by inputting the <span><math><msub><mrow><mi>Q</mi></mrow><mrow><mi>α</mi></mrow></msub></math></span> values that extracted from the Weizsäcker-Skyrme-4 (WS4) model, the finite-range droplet model (FRDM) and the Koura-Tachibaba-Uno-Yamada (KTUY) formula, respectively. By observing the evolution of the <span><math><msub><mrow><mi>Q</mi></mrow><mrow><mi>α</mi></mrow></msub></math></span> values and the half-lives of Z=118-120 isotopes versus the neutron number N, the shell effects at N=178 and N=184 are shown evidently. At last, the dominant decay modes of <span><math><mmultiscripts><mrow><mn>118</mn></mrow><mprescripts></mprescripts><none></none><mrow><mn>296</mn></mrow></mmultiscripts></math></span>, <span><math><mmultiscripts><mrow><mn>119</mn></mrow><mprescripts></mprescripts><none></none><mrow><mn>297</mn></mrow></mmultiscripts></math></span> and <span><math><mmultiscripts><mrow><mn>120</mn></mrow><mprescripts></mprescripts><none></none><mrow><mn>298</mn></mrow></mmultiscripts></math></span> <em>α</em>-decay chains are investigated by studying the competition between <em>α</em>-decay and spontaneous fission (SF), which might be helpful for identifying these nuclides in future experiments.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1058 ","pages":"Article 123072"},"PeriodicalIF":1.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738732","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":"Insights from exotic hadrons through lattice QCD","authors":"Randy Lewis","doi":"10.1016/j.nuclphysa.2025.123070","DOIUrl":"10.1016/j.nuclphysa.2025.123070","url":null,"abstract":"<div><div>Nuclear physics is built on a solid understanding of individual nucleons, which can ultimately be described in terms of light quarks and gluons. The surprising recent discoveries of several tetraquark and pentaquark candidates, each containing both light and heavy quarks, offer new insight into the physics of quarks and gluons. Lattice QCD is a rigorous first-principles computational approach that can calculate some properties of these new exotic hadrons. The status of lattice QCD studies will be reviewed for a particular family of doubly heavy exotic hadrons, including possible implications for our understanding of light quark physics.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1058 ","pages":"Article 123070"},"PeriodicalIF":1.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687638","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}