Nuclear Physics A最新文献_第10页

Investigating triply heavy tetraquark states through QCD sum rules 用QCD和规则研究三重重四夸克态

IF 2.5 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-12-01 Epub Date: 2025-08-28 DOI: 10.1016/j.nuclphysa.2025.123227

Wen-Shuai Zhang, Liang Tang

引用次数: 0

Study of nuclear structure properties of some neutron-rich even-even Titanium isotopes 富中子偶偶钛同位素的核结构性质研究

IF 2.5 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-12-01 Epub Date: 2025-09-09 DOI: 10.1016/j.nuclphysa.2025.123247

Saima Sadiq, Rani Devi, S.K. Khosa

引用次数: 0

Alpha process nucleosynthesis and sensitivity analysis in SiRoP SiRoP α过程核合成及敏感性分析

IF 2.5 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-12-01 Epub Date: 2025-09-04 DOI: 10.1016/j.nuclphysa.2025.123242

Jose Trujillo, Rachid Ouyed

引用次数: 0

Photon-induced production of the exotic charged charmonium-like state Zc(3900) off nuclear targets and its internal structure 光子诱导核靶外带电类恰蒙态Zc（3900）的产生及其内部结构

IF 2.5 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-12-01 Epub Date: 2025-08-21 DOI: 10.1016/j.nuclphysa.2025.123224

E.Ya. Paryev

引用次数: 0

Compound and non-compound nuclear fusion using forward recoil range distributions of evaporation residues produced in 18O+154Sm system 利用18O+154Sm体系中蒸发残留物的前反冲范围分布进行复合和非复合核聚变

IF 2.5 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-12-01 Epub Date: 2025-09-11 DOI: 10.1016/j.nuclphysa.2025.123245

Rajesh K. Sahoo , Dharmendra Singh , Amritraj Mahato , Pankaj K. Giri , Nitin Sharma , Lupteindu Chhura , Rahul Mahato , Sneha B. Linda , Harish Kumar , Suhail A. Tali , Rahbar Ali , M. Afzal Ansari , R. Kumar , S. Muralithar , R.P. Singh

{"title":"Compound and non-compound nuclear fusion using forward recoil range distributions of evaporation residues produced in 18O+154Sm system","authors":"Rajesh K. Sahoo , Dharmendra Singh , Amritraj Mahato , Pankaj K. Giri , Nitin Sharma , Lupteindu Chhura , Rahul Mahato , Sneha B. Linda , Harish Kumar , Suhail A. Tali , Rahbar Ali , M. Afzal Ansari , R. Kumar , S. Muralithar , R.P. Singh","doi":"10.1016/j.nuclphysa.2025.123245","DOIUrl":"10.1016/j.nuclphysa.2025.123245","url":null,"abstract":"<div><div>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 <math><msup><mrow></mrow><mn>18</mn></msup></math>O+<math><msup><mrow></mrow><mn>154</mn></msup></math>Sm system at projectile energy <math><mo>≈</mo></math> 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 <math><msup><mrow></mrow><mn>172</mn></msup></math>Yb*. However, ERs produced via <math><mi>α</mi></math> 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 <math><msup><mrow></mrow><mn>18</mn></msup></math>O into <math><msup><mrow></mrow><mn>14</mn></msup></math>C+<math><mi>α</mi></math>, contributing to the formation of an intermediate <math><msup><mrow></mrow><mn>168</mn></msup></math>Er* composite system. To investigate isotopic effects on NCNF dynamics, reactions induced by <math><msup><mrow></mrow><mn>16</mn></msup></math>O and <math><msup><mrow></mrow><mn>18</mn></msup></math>O projectiles were compared within the framework of Z<math><msub><mrow></mrow><mi>P</mi></msub></math>Z<math><msub><mrow></mrow><mi>T</mi></msub></math> and total asymmetry (<math><msubsup><mi>μ</mi><mrow><mi>c</mi><mi>m</mi></mrow><mi>T</mi></msubsup></math>). At energies <math><mo>≈</mo></math> 10<math><mo>%</mo></math> above the coulomb barrier, both projectiles exhibit comparable NCNF contributions. However, at projectile energies <math><mo>≥</mo></math> 30<math><mo>%</mo></math> above the Coulomb barrier, <math><msup><mrow></mrow><mn>18</mn></msup></math>O exhibits a significantly higher NCNF contribution as compare to <math><msup><mrow></mrow><mn>16</mn></msup></math>O. Further, the critical angular momentum increases exponentially with both Z<math><msub><mrow></mrow><mi>P</mi></msub></math>Z<math><msub><mrow></mrow><mi>T</mi></msub></math> and <math><msubsup><mi>μ</mi><mrow><mi>c</mi><mi>m</mi></mrow><mi>T</mi></msubsup></math>, establishing these parameters as key factors in onset of the NCNF process. Additionally, the study finds also that fusion suppression depends on projectile’s <math><mi>α</mi></math>-separation energy. A generalized expressio","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123245"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","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}

引用次数: 0

Isospin dependence of shell closure at N = 90 and 92 for medium mass nuclei using relativistic energy density functional 利用相对论能量密度泛函研究中等质量原子核在N = 90和92时壳层闭合的同位旋依赖性

IF 2.5 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-12-01 Epub Date: 2025-08-18 DOI: 10.1016/j.nuclphysa.2025.123222

Praveen K. Yadav , Raj Kumar , M. Bhuyan

{"title":"Isospin dependence of shell closure at N = 90 and 92 for medium mass nuclei using relativistic energy density functional","authors":"Praveen K. Yadav , Raj Kumar , M. Bhuyan","doi":"10.1016/j.nuclphysa.2025.123222","DOIUrl":"10.1016/j.nuclphysa.2025.123222","url":null,"abstract":"<div><div>In a recent study [Europhys. Lett. 146, (2024), 14001], a novel relativistic parameterisation of the energy density functional (EDF) at local density was integrated into the coherent density fluctuation model (CDFM). This approach employed the density-dependent DD-ME2 parameter within the relativistic Hartree-Bogoliubov framework, alongside the well-established non-linear NL3 force parameter, to investigate the surface properties of a few doubly-magic nuclei. In the present work, we extend this new relativistic EDF formulation to a much broader region: the evolution of shell structure across several open- and closed-shell nuclei of intermediate-mass isotopic chains, specifically Kr (<math><mi>Z</mi><mo>=</mo><mn>36</mn></math>), Sr (<math><mi>Z</mi><mo>=</mo><mn>38</mn></math>), Te (<math><mi>Z</mi><mo>=</mo><mn>52</mn></math>), Xe (<math><mi>Z</mi><mo>=</mo><mn>54</mn></math>), Ba (<math><mi>Z</mi><mo>=</mo><mn>56</mn></math>), Ce (<math><mi>Z</mi><mo>=</mo><mn>58</mn></math>), Nd (<math><mi>Z</mi><mo>=</mo><mn>60</mn></math>) and Sm (<math><mi>Z</mi><mo>=</mo><mn>62</mn></math>). Using the CDFM formalism, we translate key nuclear matter quantities, such as the symmetry energy and its derivatives, from momentum space to coordinate space at local densities. This procedure is particularly relevant when investigating nuclei near the drip lines. Our findings demonstrate that the symmetry energy successfully reproduces the conventional magic numbers <math><mi>N</mi><mo>=</mo><mn>50</mn></math> and 82 while indicating the emergence of new shell and/or sub-shell closures around <math><mi>N</mi><mo>=</mo><mn>90</mn></math> and 92. Furthermore, we decompose the symmetry energy into its volume and surface components, using two approaches, and perform an extensive comparison to assess their impact on the identification of shell closures. We also examine how neutron-proton asymmetry influences the symmetry energy along these isotopic chains. In general, this study highlights novel regions of interest in the medium-mass region of the nuclear chart. It emphasises the need for experimental investigations of the newly suggested shell closures.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123222"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144865514","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

The surrogate reactions for the neutron-capture rate using OEDO and SHARAQ in RIBF 在RIBF中使用OEDO和SHARAQ替代中子捕获速率的反应

IF 2.5 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-12-01 Epub Date: 2025-09-18 DOI: 10.1016/j.nuclphysa.2025.123248

N. Imai , M. Dozono , S. Bae , S. Michimasa , T. Sumikama , S. Ota , S. Hayakawa , J.W. Hwang , K. Iribe , C. Iwamoto , S. Kawase , K. Kawata , N. Kitamura , S. Masuoka , K. Nakano , P. Schrock , D. Suzuki , R. Tsunoda , K. Wimmer , T. Chillery , S. Shimoura

{"title":"The surrogate reactions for the neutron-capture rate using OEDO and SHARAQ in RIBF","authors":"N. Imai , M. Dozono , S. Bae , S. Michimasa , T. Sumikama , S. Ota , S. Hayakawa , J.W. Hwang , K. Iribe , C. Iwamoto , S. Kawase , K. Kawata , N. Kitamura , S. Masuoka , K. Nakano , P. Schrock , D. Suzuki , R. Tsunoda , K. Wimmer , T. Chillery , 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 (d, p) 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 <math><mi>γ</mi></math> 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 <math><msup><mrow></mrow><mn>79</mn></msup></math>Se for nuclear transmutation data, and of <math><msup><mrow></mrow><mn>130</mn></msup></math>Sn for studies related to the <math><mi>r</mi></math>-process. In this contribution, we discuss the neutron-capture cross sections of <math><msup><mrow></mrow><mn>79</mn></msup></math>Se using the surrogate ratio method, and introduce the updated experimental setup for the <math><msup><mrow></mrow><mn>130</mn></msup></math>Sn measurement.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123248"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","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}

引用次数: 0

Twist-2 distribution amplitudes of a0(980) and a0(1450) a0（980）和a0（1450）的Twist-2分布振幅

IF 2.5 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-12-01 Epub Date: 2025-08-14 DOI: 10.1016/j.nuclphysa.2025.123219

Wei Hong , Di Gao , Yanjun Sun

引用次数: 0

Systematics of reduced B(E3) transition probabilities for E3 transitions in even-A nuclei in 50 ≤ Z ≤ 92 region 50≤Z≤92区偶a核E3跃迁的约化B（E3）跃迁概率系统

IF 2.5 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-12-01 Epub Date: 2025-09-04 DOI: 10.1016/j.nuclphysa.2025.123241

P.S. Rawat, S. Kumar

{"title":"Systematics of reduced B(E3) transition probabilities for E3 transitions in even-A nuclei in 50 ≤ Z ≤ 92 region","authors":"P.S. Rawat, 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 <math><mrow><mo>(</mo><mi>E</mi><mn>3</mn><mo>)</mo></mrow></math> transitions. The enhancement in the transition strength is linked to the nuclear interactions between shell-model orbitals near the Fermi level that differ by <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>, involving high-<math><mi>j</mi></math> intruder orbitals. The present study investigates the systematics of reduced <math><mrow><mi>B</mi><mo>(</mo><mi>E</mi><mn>3</mn><mo>)</mo></mrow></math> transition probabilities in even-A nuclei with proton numbers <math><mrow><mi>Z</mi><mo>=</mo><mn>50</mn><mo>−</mo><mn>92</mn></mrow></math>. Experimental data were taken from the ENSDF, NSR and XUNDL databases. For recently measured <math><mrow><mi>E</mi><mn>3</mn></mrow></math> transitions, updated half-lives and branching ratios were used to determine refined <math><mrow><mi>B</mi><mo>(</mo><mi>E</mi><mn>3</mn><mo>)</mo></mrow></math> 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 <math><mrow><mi>E</mi><mn>3</mn></mrow></math> transition and their underlying configurations. The results reveal a clear pattern: nuclei with configurations involving octupole-driving orbitals show significantly enhanced <math><mrow><mi>B</mi><mo>(</mo><mi>E</mi><mn>3</mn><mo>)</mo></mrow></math> values, whereas the spin-flip and single-particle <math><mrow><mi>E</mi><mn>3</mn></mrow></math> transitions exhibit much weaker strengths.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123241"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","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}

引用次数: 0

Benford's law and thermal neutron capture cross-section of A(n,γ)B reactions A(n,γ)B反应的Benford定律和热中子俘获截面

IF 2.5 4区物理与天体物理

Nuclear Physics A Pub Date : 2025-12-01 Epub Date: 2025-08-28 DOI: 10.1016/j.nuclphysa.2025.123228

Nghia Nguyen Huu, Anh Tran Tuan, Thang Le Xuan, Thien Tran Quang, Huong Tuong Thi Thu, Dao Nguyen Minh, Tham Vo Thi Mong

{"title":"Benford's law and thermal neutron capture cross-section of A(n,γ)B reactions","authors":"Nghia Nguyen Huu, Anh Tran Tuan, Thang Le Xuan, Thien Tran Quang, Huong Tuong Thi Thu, Dao Nguyen Minh, Tham Vo Thi Mong","doi":"10.1016/j.nuclphysa.2025.123228","DOIUrl":"10.1016/j.nuclphysa.2025.123228","url":null,"abstract":"<div><div>This study evaluates the first-digit distribution of experimental data and semi-empirically calculated data of the thermal neutron capture cross-sections <math><mi>σ</mi><mo>(</mo><mi>n</mi><mo>,</mo><mi>γ</mi><mo>)</mo></math> for <math><mi>A</mi><mo>(</mo><mi>n</mi><mo>,</mo><mi>γ</mi><mo>)</mo><mi>B</mi></math> reactions. The <math><mi>σ</mi><mo>(</mo><mi>n</mi><mo>,</mo><mi>γ</mi><mo>)</mo></math> data for 122 isotopes were analyzed, with the scope extended to a total of 558 isotopes, including both ground and isomeric states. The results demonstrate a strong agreement with Benford's law across both datasets. However, a notable deviation is observed for the digit 8, where Mughabghab's calculated values exceed theoretical expectations. This discrepancy suggests a need for further scrutiny of the <math><mi>σ</mi><mo>(</mo><mi>n</mi><mo>,</mo><mi>γ</mi><mo>)</mo></math> values for four isotopes: 177Lu, 182Ta, 94Nb and 99Mo need to be more carefully considered in future evaluations, due to the significant errors in the elemental concentrations of these isotopes determined by the neutron activation analysis (NAA). Additionally, the theoretical model used for thermal neutron capture cross-section calculations follows a statistical model. The findings of this study not only validate the applicability of Benford's law in nuclear physics but also provide a promising approach for verifying both experimental and theoretical datasets, which is crucial for enhancing the precision of NAA in determining elemental concentrations.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1064 ","pages":"Article 123228"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144921793","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