Nuclear Physics A最新文献_第5页

Photonuclear reactions on mercury isotopes 汞同位素上的光核反应

IF 2.5 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-07-23 DOI: 10.1016/j.nuclphysa.2025.123206

O.V. Poriadina , S.S. Belyshev , N.Yu. Fursova , V.V. Khankin , A.A. Kuznetsov

引用次数: 0

Alpha-particles induced nuclear reactions on zinc: Experimental and theoretical evaluation α粒子在锌上诱导的核反应：实验和理论评价

IF 2.5 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-07-23 DOI: 10.1016/j.nuclphysa.2025.123211

A. Elbinawi , B.M. Ali , F. Ditrói , M. Al-Abyad

{"title":"Alpha-particles induced nuclear reactions on zinc: Experimental and theoretical evaluation","authors":"A. Elbinawi , B.M. Ali , F. Ditrói , M. Al-Abyad","doi":"10.1016/j.nuclphysa.2025.123211","DOIUrl":"10.1016/j.nuclphysa.2025.123211","url":null,"abstract":"<div><div>Cross-sections of the nuclear reactions <sup>nat</sup>Zn(α,x)<sup>67,68&69</sup>Ge and <sup>66,67,68&70</sup>Ga were measured from their respective threshold energy up to 20 MeV. The stacked-foil activation technique was used to generate the excitation functions of these reactions utilizing natural titanium for monitoring the irradiation beam, and HpGe detectors for the residual activity measurements. The present results along with the literature experimental data were analyzed to produce recommended excitation functions for the reactions <sup>Nat</sup>Zn(α,x)<sup>67,68</sup>Ge, <sup>Nat</sup>Zn(α,x)<sup>66</sup>Ga, <sup>64</sup>Zn(α,pn)<sup>66</sup>Ga, <sup>64</sup>Zn(α,p)<sup>67</sup>Ga, <sup>Nat</sup>Zn(α,x)<sup>68</sup>Ga, and <sup>66</sup>Zn(α,pn)<sup>68</sup>Ga for energies of up to 50 MeV. The generated recommended excitation functions were used to calculate the integral yield of these reactions. It was observed that the highest integral yield was for the reactions <sup>Nat</sup>Zn(α,x)<sup>67</sup>Ge and <sup>68</sup>Ga: 850 and 450 MBq/µAh respectively. The alpha-particle activation of zinc could be a promising route for the production of <sup>67</sup>Ge and <sup>68</sup>Ga, especially at medium-energy machines.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1063 ","pages":"Article 123211"},"PeriodicalIF":2.5,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724684","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}

引用次数: 0

Nuclear reaction experiments at TRIUMF-ISAC 在TRIUMF-ISAC的核反应实验

IF 1.7 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-07-23 DOI: 10.1016/j.nuclphysa.2025.123207

Chris Ruiz

{"title":"Nuclear reaction experiments at TRIUMF-ISAC","authors":"Chris Ruiz","doi":"10.1016/j.nuclphysa.2025.123207","DOIUrl":"10.1016/j.nuclphysa.2025.123207","url":null,"abstract":"<div><div>The ISAC (Isotope Separator and Accelerator) Facility at TRIUMF contains two room temperature & one superconducting linear accelerators able to provide rare isotope beams from 0.107 to 16.5 MeV/u, enabling reaction studies from well below the Coulomb barrier to far above it, accessing fusion-evaporation or highly-peripheral transfer reactions. Coupled with a suite of experimental facilities including a recoil separator (DRAGON), recoil spectrometer (EMMA), Compton-suppressed <em>γ</em>-ray array (TIGRESS), charged particle scattering devices (TUDA, SONIK, SHARC) and a solid hydrogen target facility (IRIS), a diverse program of nuclear reaction studies has been pursued. These range from direct and indirect cross section (or lifetime or branching ratio) measurements for nuclear astrophysics, to the study of nuclear shell evolution near the drip lines and islands of inversion, nuclear pairing, nuclear halo, cluster, or sub barrier fusion enhancement studies. These include the usage of devices brought by external users such as active target TPCs or custom reaction arrays. Recently effort has also been spent on reaction & scattering studies related to in-house <em>ab initio</em> nuclear theory calculations. For this broad program I will give a brief overview of the facility and experimental stations and a selection of recent scientific results using radioactive and stable beams to illustrate the facility's capabilities.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1063 ","pages":"Article 123207"},"PeriodicalIF":1.7,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144696593","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}

引用次数: 0

Reviving nuclear fusion reaction cycles in solido 在固体中恢复核聚变反应循环

IF 1.7 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-07-22 DOI: 10.1016/j.nuclphysa.2025.123205

Lorenzo Fortunato

引用次数: 0

Exploring algebraic symmetries in krypton nuclei 探索氪核的代数对称性

IF 1.7 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-07-08 DOI: 10.1016/j.nuclphysa.2025.123204

Narjes Amiri, Zahra Molayi, Aydin Ghalehasadi, Mohammad Ali Jafarizadeh

引用次数: 0

Improving energy resolution in an α-TOF detector 提高α-TOF探测器的能量分辨率

IF 1.7 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-07-07 DOI: 10.1016/j.nuclphysa.2025.123202

Peter Schury , Toshitaka Niwase , Michiharu Wada , Kouji Morimoto , Daiya Kaji , Sota Kimura , Yuki Yamanouchi

{"title":"Improving energy resolution in an α-TOF detector","authors":"Peter Schury , Toshitaka Niwase , Michiharu Wada , Kouji Morimoto , Daiya Kaji , Sota Kimura , Yuki Yamanouchi","doi":"10.1016/j.nuclphysa.2025.123202","DOIUrl":"10.1016/j.nuclphysa.2025.123202","url":null,"abstract":"<div><div>The alpha-TOF detector is a commercial MagneTOF ion detector with a silicon PIN diode embedded in the impact plate. We have developed the device for use in multi-reflection time-of-flight (ToF) mass spectrometry of radioisotopes, in particular superheavy elements. The alpha-decay signals provide a succinct means to identify that an implanted ion was indeed from a radioisotope ion. Until now, however, inherent noise in the detector limited the energy resolution to around <span><math><msub><mrow><mi>σ</mi></mrow><mrow><mi>E</mi></mrow></msub><mo>≈</mo><mn>150</mn></math></span> keV full-width, which was insufficient for precise identification from <span><math><msub><mrow><mi>E</mi></mrow><mrow><mi>α</mi></mrow></msub></math></span>. By selectively shutting off the high-voltage bias applied to the detector's dynode, we have significantly reduced the noise in the detector and achieved a resolution of <span><math><msub><mrow><mi>σ</mi></mrow><mrow><mi>E</mi></mrow></msub></math></span> ≈20 keV full-width. This will allow precise identification of the nuclide and nuclear state of each decay-correlated ToF event.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1063 ","pages":"Article 123202"},"PeriodicalIF":1.7,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144571821","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}

引用次数: 0

Evolution of shell-driven fission below the actinides 锕系元素以下壳驱动裂变的演化

IF 1.7 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-07-01 DOI: 10.1016/j.nuclphysa.2025.123174

J. Buete , B.M.A. Swinton-Bland , D.J. Hinde , K.J. Cook , M. Dasgupta , A.C. Berriman , D.Y. Jeung , K. Banerjee , L.T. Bezzina , I.P. Carter , C. Sengupta , C. Simenel , E.C. Simpson

{"title":"Evolution of shell-driven fission below the actinides","authors":"J. Buete , B.M.A. Swinton-Bland , D.J. Hinde , K.J. Cook , M. Dasgupta , A.C. Berriman , D.Y. Jeung , K. Banerjee , L.T. Bezzina , I.P. Carter , C. Sengupta , C. Simenel , E.C. Simpson","doi":"10.1016/j.nuclphysa.2025.123174","DOIUrl":"10.1016/j.nuclphysa.2025.123174","url":null,"abstract":"<div><div>The results of a systematic measurement of heavy-ion induced fission of every even-<em>Z</em> nucleus from <sup>144</sup>Gd to <sup>212</sup>Th (<span><math><msub><mrow><mi>Z</mi></mrow><mrow><mi>CN</mi></mrow></msub><mo>=</mo><mn>64</mn><mtext> – </mtext><mn>90</mn></math></span>) along a line of constant <span><math><mi>N</mi><mo>/</mo><mi>Z</mi></math></span> is presented. We identified shell-driven fission in all systems studied. The evolving structure of the fission mass distributions with increasing <span><math><msub><mrow><mi>Z</mi></mrow><mrow><mi>CN</mi></mrow></msub></math></span> and two-dimensional mass-kinetic fitting indicates that deformed proton shell effects in the nascent fission fragments of <span><math><msub><mrow><mi>Z</mi></mrow><mrow><mi>FF</mi></mrow></msub><mo>=</mo><mn>34</mn><mo>,</mo><mn>36</mn></math></span> and <span><math><msub><mrow><mi>Z</mi></mrow><mrow><mi>FF</mi></mrow></msub><mo>=</mo><mn>44</mn><mo>,</mo><mn>46</mn></math></span> as the primary drivers of mass-asymmetric fission in this region. For light systems (<span><math><msub><mrow><mi>Z</mi></mrow><mrow><mi>CN</mi></mrow></msub><mo><</mo><mn>80</mn></math></span>) <span><math><msub><mrow><mi>Z</mi></mrow><mrow><mi>FF</mi></mrow></msub><mo>=</mo><mn>34</mn><mo>,</mo><mn>36</mn></math></span> can be seen to drive fission as either the heavy or light fission fragment and also at mass-symmetry with changing <span><math><msub><mrow><mi>Z</mi></mrow><mrow><mi>CN</mi></mrow></msub></math></span>.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1063 ","pages":"Article 123174"},"PeriodicalIF":1.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144557289","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}

引用次数: 0

Structure of the heaviest nuclei 最重核的结构

IF 1.7 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-06-27 DOI: 10.1016/j.nuclphysa.2025.123201

A. Lopez-Martens , P. Brionnet , R. Chakma , K. Hauschild , K. Kessaci , O. Dorvaux , B. Gall , A.I. Svirikhin , A.V. Yeremin , the GABRIELA collaboration

引用次数: 0

Analysis of the near-side ridge structure in pp collisions via Momentum-Kick Model 基于动量踢模型的pp碰撞近侧脊结构分析

IF 1.7 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-06-23 DOI: 10.1016/j.nuclphysa.2025.123200

Jaesung Kim, Jin-Hee Yoon

{"title":"Analysis of the near-side ridge structure in pp collisions via Momentum-Kick Model","authors":"Jaesung Kim, Jin-Hee Yoon","doi":"10.1016/j.nuclphysa.2025.123200","DOIUrl":"10.1016/j.nuclphysa.2025.123200","url":null,"abstract":"<div><div>The near-side ridge structure has been observed in the long-range two-particle correlations in heavy-ion collisions, such as AuAu collisions at the Relativistic Heavy Ion Collider (RHIC) and PbPb collisions at the Large Hadron Collider (LHC). Hydrodynamic models have successfully explained the ridge structure in heavy-ion collisions, indicating the presence of Quark-Gluon Plasma (QGP). Interestingly, similar ridge structures have been detected in high-multiplicity proton-proton and proton-lead collisions, which are classified as small systems in the LHC experiments. Because small systems have been considered insufficient to generate QGP, the applicability of theories developed for heavy-ion collisions to small systems remains controversial. Assuming that kinematic effects play a more significant role in small systems, we expect that the Momentum-Kick Model (MKM) can provide a satisfactory explanation. This model elucidates the long-range and near-side ridge structure in dihadron <span><math><mi>Δ</mi><mi>η</mi><mo>−</mo><mi>Δ</mi><mi>ϕ</mi></math></span> correlation by explaining that jet particles kick and rearrange medium partons along the direction of the jets. In this study, we apply the MKM to explain high-multiplicity proton-proton collisions at both 13 TeV and 7 TeV in the LHC over various ranges of momenta. Furthermore, we introduce multiplicity dependence in the model to account for the 13 TeV data at various multiplicity ranges. We conclude that the MKM effectively explains the near-side ridge structure observed in proton-proton collisions. The LHC has entered Run 3, achieving higher center-of-mass energies and better luminosity than Run 2. We offer Δ<em>ϕ</em> correlation predictions for pp collisions at 14 TeV and suggest possible extensions of the MKM for future studies.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1063 ","pages":"Article 123200"},"PeriodicalIF":1.7,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490823","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}

引用次数: 0

Test of bell locality violation in flavor entangled neutral meson pair 香味纠缠中性介子对贝尔局域违逆的检验

IF 1.7 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-06-18 DOI: 10.1016/j.nuclphysa.2025.123199

Kaiwen Chen , Zhi-Peng Xing , Ruilin Zhu

引用次数: 0