Nuclear Physics APub Date : 2025-04-10DOI: 10.1016/j.nuclphysa.2025.123093
C.A. Bertulani , Y. Kucuk , F.S. Navarra
{"title":"Nuclear fragmentation at the future electron-ion collider","authors":"C.A. Bertulani , Y. Kucuk , F.S. Navarra","doi":"10.1016/j.nuclphysa.2025.123093","DOIUrl":"10.1016/j.nuclphysa.2025.123093","url":null,"abstract":"<div><div>We explore the potential of conducting low-energy nuclear physics studies, including nuclear structure and decay, at the future Electron-Ion Collider (EIC) at Brookhaven. By comparing the standard theory of electron-nucleus scattering with the equivalent photon method applied to Ultraperipheral Collisions (UPC) at the Large Hadron Collider (LHC) at CERN. In the limit of extremely high beam energies and small energy transfers, very transparent equations emerge. We apply these equations to analyze nuclear fragmentation in UPCs at the LHC and <em>eA</em> scattering at the EIC, demonstrating that the EIC could facilitate unique photonuclear physics studies. However, we have also shown that the fragmentation cross-sections at the EIC are about 1,000 times smaller than those at the LHC. At the LHC, the fragmentation of uranium nuclei displays characteristic double-hump mass distributions from fission events, while at the EIC, fragmentation is dominated by neutron emission and fewer few fission products, about 10,000 smaller number of events.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123093"},"PeriodicalIF":1.7,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821160","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}
Nuclear Physics APub Date : 2025-04-09DOI: 10.1016/j.nuclphysa.2025.123092
S. Basu , G. Mukherjee , S. Nandi , S.S. Nayak , S. Bhattacharyya , S. Chakraborty , Soumik Bhattacharya , S. Pal , Shabir Dar , Sneha Das , S. Basak , D. Kumar , Pratap Roy , D. Paul , K. Banerjee , S. Manna , Samir Kundu , T.K. Rana , R. Pandey , S. Samanta , S. Ali
{"title":"Rotational band based on πf7/2 orbital in 55Mn","authors":"S. Basu , G. Mukherjee , S. Nandi , S.S. Nayak , S. Bhattacharyya , S. Chakraborty , Soumik Bhattacharya , S. Pal , Shabir Dar , Sneha Das , S. Basak , D. Kumar , Pratap Roy , D. Paul , K. Banerjee , S. Manna , Samir Kundu , T.K. Rana , R. Pandey , S. Samanta , S. Ali","doi":"10.1016/j.nuclphysa.2025.123092","DOIUrl":"10.1016/j.nuclphysa.2025.123092","url":null,"abstract":"<div><div>The excited states of odd-A nucleus <sup>55</sup>Mn have been investigated using <em>α</em>-induced fusion evaporation reaction to explore the shape driving effect of proton f<sub>7/2</sub> orbital below Z = 28 shell gap. A deformed band structure, based on <span><math><mi>π</mi><msub><mrow><mi>f</mi></mrow><mrow><mn>7</mn><mo>/</mo><mn>2</mn></mrow></msub></math></span> configuration has been identified at lower excitation with firm spin-parity assignments of the levels. Band crossing has been identified for the first time in this nucleus through the observation of back bending in one of the signature partners. The properties of this band has been compared with the similar bands in the neighboring isotopes, <sup>57,59</sup>Mn. The Total Routhian Surface calculations predict prolate shape for all the three Mn isotopes below the band crossing. However, a change in shape is predicted by these calculations at higher frequencies beyond the particle alignment. An unnatural parity state has also been identified in <sup>55</sup>Mn which has been found to decay by E3 and E1 transitions. This observation indicates, for the first time, the presence of octupole correlation in this nucleus. It has been discussed in the light of the octupole correlation observed in its isobar <sup>55</sup>V and other nearby odd-odd nuclei.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123092"},"PeriodicalIF":1.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814748","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}
Nuclear Physics APub Date : 2025-04-09DOI: 10.1016/j.nuclphysa.2025.123091
Pankaj Kumar , Khursheed Ahmad Rather , G.H. Bhat
{"title":"Weakening of shell gap and shape coexistence in 40Mg, 42Si, and 44S","authors":"Pankaj Kumar , Khursheed Ahmad Rather , G.H. Bhat","doi":"10.1016/j.nuclphysa.2025.123091","DOIUrl":"10.1016/j.nuclphysa.2025.123091","url":null,"abstract":"<div><div>The suppression of <em>N</em> = 28 shell closure is expected towards proton deficient nuclei. As a consequence of which, coexistence of different nuclear shapes occurs in the even-even isotones of <em>N</em> = 28. We have applied covariant density functional theory based on the relativistic energy density functional DD-PCX to study the ground state and shape coexistence in <sup>40</sup>Mg, <sup>42</sup>Si, <sup>44</sup>S, and <sup>46</sup>Ar (even-even <em>N</em> = 28 isotones). The binding energy maps, calculated from unconstrained and constrained calculations, indicate a deformed ground state minimum for <sup>40</sup>Mg, <sup>42</sup>Si, and <sup>44</sup>S. Different nuclear shapes are found to coexist in these nuclei within small excitation energies. In <sup>40</sup>Mg and <sup>42</sup>Si, rigid shapes with different deformations coexist with excitation energies around 2-3 MeV, while <sup>44</sup>S is expected not to have any particular shape due to a small value of excitation energy. The quenching of shell gap in these nuclei is related to the inversion of neutron orbits with different values of Ω and quadrupole excitations neutrons across <em>fp</em> orbits. For further investigation of shape coexistence in these nuclei, we have employed the triaxial projected shell model in which the deformation parameters, calculated from covariant density functional theory, are taken in input. The presence of <span><math><msubsup><mrow><mn>0</mn></mrow><mrow><mn>2</mn></mrow><mrow><mo>+</mo></mrow></msubsup></math></span> state in the low-lying energy spectra of these nuclei support existence of shape coexistence in <sup>40</sup>Mg, <sup>42</sup>Si, and <sup>44</sup>S. Furthermore, a reduced value of electric monopole transition strength, in <sup>44</sup>S, is utilized as a probe for weak mixing of prolately and oblately deformed shapes.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123091"},"PeriodicalIF":1.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821159","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}
Nuclear Physics APub Date : 2025-04-08DOI: 10.1016/j.nuclphysa.2025.123090
N.K. Syeda , P. Spagnoletti , C. Andreoiu , C.M. Petrache , D. Annen , R.S. Lubna , V. Vedia , A. Algora , A. Babu , G.C. Ball , S. Bhattacharjee , R. Caballero-Folch , R. Coleman , I. Dillmann , E.G. Fuakye , L.P. Gaffney , F.H. Garcia , A.B. Garnsworthy , P.E. Garrett , C.J. Griffin , T. Zidar
{"title":"Investigation of the excited states of 114Sn using the GRIFFIN spectrometer at TRIUMF","authors":"N.K. Syeda , P. Spagnoletti , C. Andreoiu , C.M. Petrache , D. Annen , R.S. Lubna , V. Vedia , A. Algora , A. Babu , G.C. Ball , S. Bhattacharjee , R. Caballero-Folch , R. Coleman , I. Dillmann , E.G. Fuakye , L.P. Gaffney , F.H. Garcia , A.B. Garnsworthy , P.E. Garrett , C.J. Griffin , T. Zidar","doi":"10.1016/j.nuclphysa.2025.123090","DOIUrl":"10.1016/j.nuclphysa.2025.123090","url":null,"abstract":"<div><div>The semi-magic <figure><img></figure> isotopes display signs of shape coexistence in their excited <span><math><msup><mrow><mn>0</mn></mrow><mrow><mo>+</mo></mrow></msup></math></span> states, which, in contrast to the spherical <span><math><msup><mrow><mn>0</mn></mrow><mrow><mo>+</mo></mrow></msup></math></span> ground states, are deformed. This paper investigates the nuclear structure of <figure><img></figure> using the competing <span><math><msup><mrow><mi>β</mi></mrow><mrow><mo>+</mo></mrow></msup></math></span> decay and electron capture of a radioactive beam of <figure><img></figure> produced at the TRIUMF-ISAC facility using the GRIFFIN spectrometer. This study will allow for an in-depth understanding of the excited <span><math><msup><mrow><mn>0</mn></mrow><mrow><mo>+</mo></mrow></msup></math></span> states in <figure><img></figure>, by focusing on their decay patterns. In the present experiment, transitions at 856.2-keV and 1405.0-keV, which were observed in an earlier <span><math><msup><mrow><mi>β</mi></mrow><mrow><mo>+</mo></mrow></msup></math></span> decay study but not placed in the <figure><img></figure> level scheme, have been assigned to the level scheme in connection to the <span><math><msubsup><mrow><mn>0</mn></mrow><mrow><mn>3</mn></mrow><mrow><mo>+</mo></mrow></msubsup></math></span> level at 2156.0-keV. Properly assigning these transitions refines the level scheme and enhances our understanding of the nuclear structure in <figure><img></figure>.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123090"},"PeriodicalIF":1.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839462","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}
Nuclear Physics APub Date : 2025-04-04DOI: 10.1016/j.nuclphysa.2025.123089
Guoqing Wu , Jianmin Dong
{"title":"Effect of symmetry energy on the structure and α-decay of deformed superheavy nuclei","authors":"Guoqing Wu , Jianmin Dong","doi":"10.1016/j.nuclphysa.2025.123089","DOIUrl":"10.1016/j.nuclphysa.2025.123089","url":null,"abstract":"<div><div>We explore the impact of the density-dependent nuclear symmetry energy on the properties and stability of superheavy nuclei (SHN) based on a deformed relativistic mean-field theory in combination with the BCS method. The interaction ‘family’ based on the well-established FSUGarnet parameter set is introduced by adjusting the nonlinear <span><math><mi>ω</mi><mo>−</mo><mi>ρ</mi></math></span> coupling parameter <span><math><msub><mrow><mi>Λ</mi></mrow><mrow><mtext>V</mtext></mrow></msub></math></span> and <em>ρ</em>-nucleon coupling parameter <span><math><msub><mrow><mi>g</mi></mrow><mrow><mi>ρ</mi></mrow></msub></math></span>. This adjustment allows us to explore various density-dependent behaviors of the symmetry energy while maintaining its value at saturation density. A larger <span><math><msub><mrow><mi>Λ</mi></mrow><mrow><mtext>V</mtext></mrow></msub></math></span> gives larger symmetry energy (but softer due to its small slope) below the saturation density. Under different density-dependent behavior of symmetry energy, the nuclear deformation remains largely unchanged, and the nuclear magicity is also almost not altered distinctly although the single-particle energy levels shift evidently. Intriguingly, although the shell gaps are not altered obviously, the stability of SHN against <em>α</em>-decay is enhanced substantially as the symmetry energy softens because a softer symmetry energy gives a smaller <em>α</em>-decay energy and a much longer lifetime.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1059 ","pages":"Article 123089"},"PeriodicalIF":1.7,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792696","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}
Nuclear Physics APub Date : 2025-04-04DOI: 10.1016/j.nuclphysa.2025.123076
E. Geraci , E. De Filippo , G. Cardella , M. Colonna , E. Gambera , B. Gnoffo , C. Maiolino , N.S. Martorana , A. Pagano , E.V. Pagano , S. Pirrone , G. Politi , F. Rizzo , P. Russotto , M. Trimarchi , S. Barlini , R. Bougault , G. Casini , N. Le Neindre , S. Piantelli
{"title":"Fragments features and Isoscaling in Ni+Ca systems at the entrance of Fermi energy domain","authors":"E. Geraci , E. De Filippo , G. Cardella , M. Colonna , E. Gambera , B. Gnoffo , C. Maiolino , N.S. Martorana , A. Pagano , E.V. Pagano , S. Pirrone , G. Politi , F. Rizzo , P. Russotto , M. Trimarchi , S. Barlini , R. Bougault , G. Casini , N. Le Neindre , 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 <sup>62</sup>Ni+<sup>48</sup>Ca 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 <sup>62</sup>Ni+<sup>48</sup>Ca system and compared with the results obtained for <sup>58</sup>Ni+<sup>40</sup>Ca 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}
Nuclear Physics APub Date : 2025-04-02DOI: 10.1016/j.nuclphysa.2025.123079
J.T. Li , N. Imai , R. Yokoyama , S. Michimasa , T. Chillery , R. Kojima , S. Hanai , N. Kitamura , T. Saito , D. Suzuki , D. Nishimura , M. Amitani , C. Fukushima , Y. Nakamura , R. Kageyama , J. Sonoda , E. Takada , S. Sakaguchi , Z.G. Xiao
{"title":"Probing heavy-ion fusion reaction 136Xe + 64Zn in inverse kinematics","authors":"J.T. Li , N. Imai , R. Yokoyama , S. Michimasa , T. Chillery , R. Kojima , S. Hanai , N. Kitamura , T. Saito , D. Suzuki , D. Nishimura , M. Amitani , C. Fukushima , Y. Nakamura , R. Kageyama , J. Sonoda , E. Takada , S. Sakaguchi , 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 <sup>136</sup>Xe 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}
Nuclear Physics APub Date : 2025-04-02DOI: 10.1016/j.nuclphysa.2025.123078
A. Bahini , P. von Neumann-Cosel , J. Carter , I.T. Usman , N.N. Arsenyev , A.P. Severyukhin , E. Litvinova , R.W. Fearick , R. Neveling , P. Adsley , N. Botha , J.W. Brümmer , L.M. Donaldson , S. Jongile , T.C. Khumalo , M.B. Latif , K.C.W. Li , P.Z. Mabika , P.T. Molema , C.S. Moodley , J.J. van Zyl
{"title":"Damping mechanism of the isoscalar giant monopole resonance in 58Ni","authors":"A. Bahini , P. von Neumann-Cosel , J. Carter , I.T. Usman , N.N. Arsenyev , A.P. Severyukhin , E. Litvinova , R.W. Fearick , R. Neveling , P. Adsley , N. Botha , J.W. Brümmer , L.M. Donaldson , S. Jongile , T.C. Khumalo , M.B. Latif , K.C.W. Li , P.Z. Mabika , P.T. Molema , C.S. Moodley , 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}
Nuclear Physics APub Date : 2025-04-02DOI: 10.1016/j.nuclphysa.2025.123077
Nicholas Mendez , Thomas Baumann , Paul Guèye
{"title":"Simulations of neutron unbound physics for Geant4","authors":"Nicholas Mendez , Thomas Baumann , 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}
Nuclear Physics APub Date : 2025-04-02DOI: 10.1016/j.nuclphysa.2025.123080
A. Coman , C. Borcea , R. Borcea , M. Boromiza , S. Calinescu , D. Chiriac , C. Costache , P. Dessagne , I. Dinescu , A. Farzanehpoor Alwars , N. Florea , A. Gandhi , G. Henning , M. Kavatsyuk , M. Kerveno , C. Mihai , A. Negret , A. Oprea , C. Petrone , A. Plompen , G. Turturica
{"title":"Proton inelastic scattering on 56Fe: Insights from the 9-MV Tandem Accelerator measurements @ IFIN-HH","authors":"A. Coman , C. Borcea , R. Borcea , M. Boromiza , S. Calinescu , D. Chiriac , C. Costache , P. Dessagne , I. Dinescu , A. Farzanehpoor Alwars , N. Florea , A. Gandhi , G. Henning , M. Kavatsyuk , M. Kerveno , C. Mihai , A. Negret , A. Oprea , C. Petrone , A. Plompen , 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 <sup>56</sup>Fe 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 <sup>56</sup>Fe 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/cm<sup>2</sup> 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/cm<sup>2</sup> of <sup>56</sup>Fe (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 <sup>56</sup>Fe. 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-<sup>56</sup>Fe 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}
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