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International Journal of Modern Physics E最新文献

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Virtual and resonance states in the three-body D − μ−− T, D − μ−− D systems 三体 D - μ-- T、D - μ-- D 系统中的虚拟态和共振态
IF 1 4区 物理与天体物理
International Journal of Modern Physics E Pub Date : 2024-08-09 DOI: 10.1142/s0218301324410015
Egorov Mikhail
{"title":"Virtual and resonance states in the three-body D − μ−− T, D − μ−− D systems","authors":"Egorov Mikhail","doi":"10.1142/s0218301324410015","DOIUrl":"https://doi.org/10.1142/s0218301324410015","url":null,"abstract":"","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141925218","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
Neutron and fission decay width of superheavy compound nuclei 超重化合物核的中子和裂变衰变宽度
IF 1 4区 物理与天体物理
International Journal of Modern Physics E Pub Date : 2024-07-26 DOI: 10.1142/s0218301324500344
P. S. Damodara Gupta, N. Sowmya, H.C. Manjunath, T. Ganesh
{"title":"Neutron and fission decay width of superheavy compound nuclei","authors":"P. S. Damodara Gupta, N. Sowmya, H.C. Manjunath, T. Ganesh","doi":"10.1142/s0218301324500344","DOIUrl":"https://doi.org/10.1142/s0218301324500344","url":null,"abstract":"","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141802137","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
Search of effective interaction in dipole bands of an odd-odd trans-lead nucleus: The case of 204At 奇数多反式铅核偶极带中有效相互作用的搜索：204At 的情况
IF 1.1 4区 物理与天体物理
International Journal of Modern Physics E Pub Date : 2024-04-19 DOI: 10.1142/s0218301324500204
Debasmita Kanjilal
{"title":"Search of effective interaction in dipole bands of an odd-odd trans-lead nucleus: The case of 204At","authors":"Debasmita Kanjilal","doi":"10.1142/s0218301324500204","DOIUrl":"https://doi.org/10.1142/s0218301324500204","url":null,"abstract":"","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140682505","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
Moments of inertia in light deformed nuclei: pairing and mean-field impacts 轻变形核的惯性矩：配对和均场影响
IF 1.1 4区 物理与天体物理
International Journal of Modern Physics E Pub Date : 2024-04-19 DOI: 10.1142/s0218301324500216
V. Nesterenko, M. A. Mardyban, P.-G. Reinhard, A. Repko, J. Kvasil
{"title":"Moments of inertia in light deformed nuclei: pairing and mean-field impacts","authors":"V. Nesterenko, M. A. Mardyban, P.-G. Reinhard, A. Repko, J. Kvasil","doi":"10.1142/s0218301324500216","DOIUrl":"https://doi.org/10.1142/s0218301324500216","url":null,"abstract":"","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140684268","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
Machine learning nuclear orbital-free density functional based on Thomas–Fermi approach 基于托马斯-费米方法的机器学习无核轨道密度函数
IF 1.1 4区 物理与天体物理
International Journal of Modern Physics E Pub Date : 2024-03-27 DOI: 10.1142/s0218301324500125
Y. Y. Chen, X. H. Wu
{"title":"Machine learning nuclear orbital-free density functional based on Thomas–Fermi approach","authors":"Y. Y. Chen, X. H. Wu","doi":"10.1142/s0218301324500125","DOIUrl":"https://doi.org/10.1142/s0218301324500125","url":null,"abstract":"<p>Orbital-free density functional theory (DFT) is much more efficient than the orbital-dependent Kohn–Sham DFT due to the avoidance of the auxiliary one-body orbitals. The machine learning approach has been applied to build nuclear orbital-free DFT recently [Wu <i>et al.</i>, <i>Phys. Rev. C</i><b>105</b> (2022) L031303] and achieved more precise descriptions for nuclei than existing orbital-free DFTs. Here, improved machine learning nuclear orbital-free density functional is built by including the Thomas–Fermi approach as a basement. Performances of the functional are compared in detail with the ones based on the pure machine learning approach. It is found that with the Thomas–Fermi functional included, the machine-learning-based functional can achieve better performance in directly predicting the kinetic energies and in providing the ground-state properties by the self-consistent procedures.</p>","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140313137","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
Multiplicity correlation of fast target protons and projectile fragments for the events produced in the interaction of 84Kr nuclei with emulsion nuclei at 1 A GeV 84Kr 核与乳状核在 1 A GeV 的相互作用中产生的事件的快速目标质子和射弹碎片的倍率相关性
IF 1.1 4区 物理与天体物理
International Journal of Modern Physics E Pub Date : 2024-03-20 DOI: 10.1142/s0218301324500113
M. K. Singh, B. Kumari
{"title":"Multiplicity correlation of fast target protons and projectile fragments for the events produced in the interaction of 84Kr nuclei with emulsion nuclei at 1 A GeV","authors":"M. K. Singh, B. Kumari","doi":"10.1142/s0218301324500113","DOIUrl":"https://doi.org/10.1142/s0218301324500113","url":null,"abstract":"<p>It has become obvious that one crucial aspect in understanding high energy nuclear reactions is the fragmentation of colliding nuclei. The nuclear emulsion is a 4<span><math altimg=\"eq-00002.gif\" display=\"inline\" overflow=\"scroll\"><mi>π</mi></math></span><span></span> detector that makes it simple to identify and quantify the charges of projectile fragments. In this work, we study the multiplicity distribution and angle distributions of single, double charge projectile fragments, fast target protons (gray particle) as well as their correlation for the events produced in the interactions of <span><math altimg=\"eq-00003.gif\" display=\"inline\" overflow=\"scroll\"><msup><mrow></mrow><mrow><mn>8</mn><mn>4</mn></mrow></msup><msub><mrow><mstyle><mtext mathvariant=\"normal\">Kr</mtext></mstyle></mrow><mrow><mn>3</mn><mn>6</mn></mrow></msub></math></span><span></span> with emulsion nuclei at 1<span><math altimg=\"eq-00004.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math></span><span></span>A<span><math altimg=\"eq-00005.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math></span><span></span>GeV. We also study the target-dependent angle distribution of gray particles. The results are compared with other experimental data as per availability. This analysis shows that multiplicity distributions have a remarkable link between the projectile and target fragmentation processes.</p>","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201961","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
Pseudospin symmetry in resonant states in deformed nucleus 154Dy 变形核 154Dy 共振态的伪ospin 对称性
IF 1.1 4区 物理与天体物理
International Journal of Modern Physics E Pub Date : 2024-03-16 DOI: 10.1142/s0218301324500058
Xin-Xing Shi, Zhen-Yu Zheng
{"title":"Pseudospin symmetry in resonant states in deformed nucleus 154Dy","authors":"Xin-Xing Shi, Zhen-Yu Zheng","doi":"10.1142/s0218301324500058","DOIUrl":"https://doi.org/10.1142/s0218301324500058","url":null,"abstract":"<p>It is known that pseudospin symmetry plays a crucial role in formation of many physical phenomena. By combining the relativistic mean field theory with the complex momentum representation method, the pseudospin symmetry in the single particle resonant states in the deformed nucleus <span><math altimg=\"eq-00002.gif\" display=\"inline\" overflow=\"scroll\"><msup><mrow></mrow><mrow><mn>1</mn><mn>5</mn><mn>4</mn></mrow></msup></math></span><span></span>Dy is investigated through the energy and width splittings, the quadrupole deformation parameter, the radial density distributions and occupation probabilities of the pseudospin doublets. Near the continuum threshold, the pseudospin symmetry is well reserved in both bound and resonant states. The energy and width splittings of pseudospin doublets in resonant states exhibit correlations with the deformation and quantum numbers. The good pseudospin symmetry is expected with lower pseudo-orbital angular momentum projection <span><math altimg=\"eq-00003.gif\" display=\"inline\" overflow=\"scroll\"><mover accent=\"true\"><mrow><mi mathvariant=\"normal\">Λ</mi></mrow><mo>̃</mo></mover></math></span><span></span> and the main quantum number <i>N</i>. In general, an increase in deformation tends to weaken the quality of the pseudospin symmetry. The understanding of the evolution of the pseudospin doublets in the resonant states has been deepened by studying the pseudospin symmetry in the deformed nuclei.</p>","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140149841","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
Fraction constraint in partial wave analysis 部分波分析中的分数约束
IF 1.1 4区 物理与天体物理
International Journal of Modern Physics E Pub Date : 2024-02-03 DOI: 10.1142/s0218301324500010
Xiang Dong, Chu-Cheng Pan, Yu-Chang Sun, Ao-Yan Cheng, Ao-Bo Wang, Hao Cai, Kai Zhu
{"title":"Fraction constraint in partial wave analysis","authors":"Xiang Dong, Chu-Cheng Pan, Yu-Chang Sun, Ao-Yan Cheng, Ao-Bo Wang, Hao Cai, Kai Zhu","doi":"10.1142/s0218301324500010","DOIUrl":"https://doi.org/10.1142/s0218301324500010","url":null,"abstract":"<p>To resolve the nonconvex optimization problem in partial wave analysis, this paper introduces a novel approach that incorporates fraction constraints into the likelihood function. This method offers significant improvements in the efficiency of pole searching within partial wave analysis.</p>","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140149583","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
Properties of the 7He ground state studied by the 6He(d,p)7He reaction 通过 6He(d,p)7He 反应研究 7He 基态的性质
IF 1.1 4区 物理与天体物理
International Journal of Modern Physics E Pub Date : 2024-02-03 DOI: 10.1142/s0218301324500022
A. A. Bezbakh, M. S. Golovkov, A. S. Denikin, R. Wolski, S. G. Belogurov, D. Biare, V. Chudoba, A. S. Fomichev, E. M. Gazeeva, A. V. Gorshkov, G. Kaminski, B. R. Khamidullin, M. Khirk, S. A. Krupko, B. Mauyey, I. A. Muzalevskii, W. Piatek, A. M. Quynh, S. I. Sidorchuk, R. S. Slepnev, A. Swiercz, G. M. Ter-Akopian, B. Zalewski
{"title":"Properties of the 7He ground state studied by the 6He(d,p)7He reaction","authors":"A. A. Bezbakh, M. S. Golovkov, A. S. Denikin, R. Wolski, S. G. Belogurov, D. Biare, V. Chudoba, A. S. Fomichev, E. M. Gazeeva, A. V. Gorshkov, G. Kaminski, B. R. Khamidullin, M. Khirk, S. A. Krupko, B. Mauyey, I. A. Muzalevskii, W. Piatek, A. M. Quynh, S. I. Sidorchuk, R. S. Slepnev, A. Swiercz, G. M. Ter-Akopian, B. Zalewski","doi":"10.1142/s0218301324500022","DOIUrl":"https://doi.org/10.1142/s0218301324500022","url":null,"abstract":"<p>The <sup>7</sup>He nucleus was studied using the <sup>6</sup>He<span><math altimg=\"eq-00003.gif\" display=\"inline\" overflow=\"scroll\"><msup><mrow><mo stretchy=\"false\">(</mo><mi>d</mi><mo>,</mo><mi>p</mi><mo stretchy=\"false\">)</mo></mrow><mrow><mn>7</mn></mrow></msup></math></span><span></span>He reaction in inverse kinematics at 29 <span><math altimg=\"eq-00004.gif\" display=\"inline\" overflow=\"scroll\"><mtext>A</mtext><mo>⋅</mo></math></span><span></span>MeV <sup>6</sup>He beam delivered by the ACCULINNA-2 fragment separator (FLNR, JINR). The registration of neutrons from <span><math altimg=\"eq-00005.gif\" display=\"inline\" overflow=\"scroll\"><msup><mrow></mrow><mrow><mn>7</mn></mrow></msup><mstyle><mtext mathvariant=\"normal\">He</mtext></mstyle><mo>→</mo><mi>n</mi><msup><mrow><mo>+</mo></mrow><mrow><mn>6</mn></mrow></msup><mstyle><mtext mathvariant=\"normal\">He</mtext></mstyle></math></span><span></span> decay made it possible to derive the <sup>7</sup>He ground state parameters, the decay energy of 0.38(2)<span><math altimg=\"eq-00006.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math></span><span></span>MeV and width of 0.11(3)<span><math altimg=\"eq-00007.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math></span><span></span>MeV.</p>","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140149531","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
Initial vorticities of quark–gluon matter in heavy-ion collisions 重离子碰撞中夸克胶子物质的初始涡度
IF 1.1 4区 物理与天体物理
International Journal of Modern Physics E Pub Date : 2024-01-29 DOI: 10.1142/s0218301323410045
Anke Lei, Dujuan Wang, Dai-Mei Zhou, Ben-Hao Sa, Laszlo Pal Csernai, Larissa V. Bravina
{"title":"Initial vorticities of quark–gluon matter in heavy-ion collisions","authors":"Anke Lei, Dujuan Wang, Dai-Mei Zhou, Ben-Hao Sa, Laszlo Pal Csernai, Larissa V. Bravina","doi":"10.1142/s0218301323410045","DOIUrl":"https://doi.org/10.1142/s0218301323410045","url":null,"abstract":"<p>We calculate four types of initial vorticities in Au<span><math altimg=\"eq-00001.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math></span><span></span><span><math altimg=\"eq-00002.gif\" display=\"inline\" overflow=\"scroll\"><mo>+</mo></math></span><span></span><span><math altimg=\"eq-00003.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math></span><span></span>Au collisions at energies <span><math altimg=\"eq-00004.gif\" display=\"inline\" overflow=\"scroll\"><msqrt><mrow><msub><mrow><mi>S</mi></mrow><mrow><mstyle><mtext mathvariant=\"normal\">NN</mtext></mstyle></mrow></msub></mrow></msqrt><mo>=</mo><mn>5</mn></math></span><span></span>–200<span><math altimg=\"eq-00005.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math></span><span></span>GeV using a microscopic transport model PACIAE. Our simulation shows the nonmonotonic dependence of the initial vorticities on the collision energies. The energy turning point is around 10–15<span><math altimg=\"eq-00006.gif\" display=\"inline\" overflow=\"scroll\"><mspace width=\".17em\"></mspace></math></span><span></span>GeV for different vorticities but not sensitive to impact parameter.</p>","PeriodicalId":50306,"journal":{"name":"International Journal of Modern Physics E","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140076130","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
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