Physical Review C最新文献

{"title":"P-even andP-odd asymmetries inSn117in the vicinity of thepresonance atEp=1.33eV","authors":"L. E. Charón-García, L. Barrón-Palos, J. Curole, W. M. Snow, V. Gudkov (NOPTREX Collaboration)","doi":"10.1103/physrevc.109.014614","DOIUrl":"https://doi.org/10.1103/physrevc.109.014614","url":null,"abstract":"A self-consistent description of angular correlations in neutron-induced reactions is required for quantitative analysis of parity violating (PV) and time-reversal invariance violating (TRIV) effects in neutron-nucleus scattering. The 1.33 eV <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>p</mi></math>-wave compound resonance in <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mmultiscripts><mi>Sn</mi><mprescripts></mprescripts><none></none><mn>117</mn></mmultiscripts></math> is one of the few <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>p</mi></math>-wave resonances where enough measurements have been performed to allow a nontrivial test of the internal consistency of the theory. We present the results of a global analysis of the several different asymmetries and angular distribution measurements in (<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>n</mi><mo>,</mo><mi>γ</mi></mrow></math>) reactions on the 1.33 eV <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>p</mi></math>-wave resonance in <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mmultiscripts><mi>Sn</mi><mprescripts></mprescripts><none></none><mn>117</mn></mmultiscripts></math> conducted over the last few decades. We show that the compound resonance mixing theory can give an internally consistent description of all observations made in this system to date within the experimental measurement errors. We also confirm the conclusions of previous analyses that a subthreshold resonance in <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mmultiscripts><mi>Sn</mi><mprescripts></mprescripts><none></none><mn>117</mn></mmultiscripts></math> dominates correlations related to <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>s</mi><mtext>−</mtext><mi>p</mi></math> mixing and discuss the implications of these results for future searches for TRIV in this system.","PeriodicalId":20122,"journal":{"name":"Physical Review C","volume":"85 3 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139476201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Smallest drop of QGP: Thermodynamic properties ofp-Pbcollisions","authors":"Fernando G. Gardim, Renata Krupczak, Tiago Nunes da Silva","doi":"10.1103/physrevc.109.014904","DOIUrl":"https://doi.org/10.1103/physrevc.109.014904","url":null,"abstract":"The extreme temperature and density conditions that arise in ultrarelativistic collisions of heavy nuclei enable the formation of the most fundamental fluid in the universe, the deconfined phase of quantum chromodynamics known as quark-gluon plasma. Despite the extensive experimental evidence gathered over the last decade for the production of quark-gluon plasma in colliding systems such as Au-Au and Pb-Pb, the formation of quark-gluon plasma in the collision of smaller systems such as <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>p</mi></math>-Pb remains an open question. In this study, we describe the evolution of matter formed in <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>p</mi></math>-Pb collisions at 5.02 TeV using a state-of-the-art hybrid model based on viscous relativistic hydrodynamics. We study the thermodynamic properties of the medium and the final state observables. Our results are compared with experimental data and first-principles lattice quantum chromodynamics calculations. The results support the formation of a collective phase of strongly interacting matter in high-multiplicity <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>p</mi></math>-Pb collisions.","PeriodicalId":20122,"journal":{"name":"Physical Review C","volume":"48 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139476198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Observation of asymmetric fission inPb204at low excitation energies","authors":"Vineet Kumar, K. Mahata, Sangeeta Dhuri, A. Shrivastava, K. Ramachandran, S. Pandit, V. V. Parkar, Arati Chavan, Abhinav Kumar, Satbir Kaur, P. C. Rout","doi":"10.1103/physrevc.109.014613","DOIUrl":"https://doi.org/10.1103/physrevc.109.014613","url":null,"abstract":"The fragment mass and total kinetic energy distributions were measured in fission of <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mmultiscripts><mi>Pb</mi><mprescripts></mprescripts><none></none><mn>204</mn></mmultiscripts></math>, populated in the <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mmultiscripts><mi>Li</mi><mprescripts></mprescripts><none></none><mn>7</mn></mmultiscripts><mo>+</mo><mmultiscripts><mi>Au</mi><mprescripts></mprescripts><none></none><mn>197</mn></mmultiscripts></mrow></math> reaction at excitation energies down to 15.3 MeV above the fission barrier. Fits considering admixture of symmetric and asymmetric fission indicate the presence of substantial asymmetric fission at all measured energies. The measured mass distributions are in good agreement with the model predictions. The observed excitation energy dependence of asymmetric fission fractions for the present system is compared with those for near<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mo>−</mo></math>by nuclei and predictions of theoretical models to understand the damping of shell correction at large deformation.","PeriodicalId":20122,"journal":{"name":"Physical Review C","volume":"6 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139476200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 rotations inBi202andBi203","authors":"ShuNan Zhao, Duo Chen, Jian Li, Dong Yang","doi":"10.1103/physrevc.109.014315","DOIUrl":"https://doi.org/10.1103/physrevc.109.014315","url":null,"abstract":"Four magnetic dipole bands in &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mmultiscripts&gt;&lt;mi&gt;Bi&lt;/mi&gt;&lt;mprescripts&gt;&lt;/mprescripts&gt;&lt;none&gt;&lt;/none&gt;&lt;mn&gt;202&lt;/mn&gt;&lt;/mmultiscripts&gt;&lt;/math&gt; and &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mmultiscripts&gt;&lt;mi&gt;Bi&lt;/mi&gt;&lt;mprescripts&gt;&lt;/mprescripts&gt;&lt;none&gt;&lt;/none&gt;&lt;mn&gt;203&lt;/mn&gt;&lt;/mmultiscripts&gt;&lt;/math&gt; are investigated by the systematic comparison with similar bands in Pb isotopes and the tilted axis cranking covariant density functional theory (TAC-CDFT) calculations. The spin and configuration are assigned by the comparison with magnetic rotational bands in Pb isotopes. The corresponding configurations are suggested to be &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow&gt;&lt;mi&gt;π&lt;/mi&gt;&lt;msub&gt;&lt;mi&gt;h&lt;/mi&gt;&lt;mrow&gt;&lt;mn&gt;9&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msub&gt;&lt;mi&gt;i&lt;/mi&gt;&lt;mrow&gt;&lt;mn&gt;13&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;mo&gt;⊗&lt;/mo&gt;&lt;mi&gt;ν&lt;/mi&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;i&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;13&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/mrow&gt;&lt;/math&gt;, &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow&gt;&lt;mi&gt;π&lt;/mi&gt;&lt;msub&gt;&lt;mi&gt;h&lt;/mi&gt;&lt;mrow&gt;&lt;mn&gt;9&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msub&gt;&lt;mi&gt;i&lt;/mi&gt;&lt;mrow&gt;&lt;mn&gt;13&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;mo&gt;⊗&lt;/mo&gt;&lt;mi&gt;ν&lt;/mi&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;i&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;13&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mi&gt;p&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt;, and &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow&gt;&lt;mi&gt;π&lt;/mi&gt;&lt;msub&gt;&lt;mi&gt;h&lt;/mi&gt;&lt;mrow&gt;&lt;mn&gt;9&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msub&gt;&lt;mi&gt;i&lt;/mi&gt;&lt;mrow&gt;&lt;mn&gt;13&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;mo&gt;⊗&lt;/mo&gt;&lt;mi&gt;ν&lt;/mi&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;i&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;13&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mi&gt;p&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt; for the four magnetic dipole bands. The calculated energy spectra and the relation between spin and rotational frequency with TAC-CDFT are in good agreement with available experimental data, further supporting the spin and configuration assignments. The deformation parameters, transition probabilities, and the angular momenta contributions of protons and neutrons are also studied. These calculated quantities, together with the experimental data and the similarity with Pb isotopes, confirm the shear mechanism of these four magnetic dipole bands in &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mmultiscripts&gt;&lt;mi&gt;Bi&lt;/mi&gt;&lt;mprescripts&gt;&lt;/mprescripts&gt;&lt;none&gt;&lt;/none&gt;&lt;mn&gt;202&lt;/mn&gt;&lt;/mmultiscripts&gt;&lt;/math&gt; and &lt;math xmlns=\"h","PeriodicalId":20122,"journal":{"name":"Physical Review C","volume":"28 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139476202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Global properties of nuclei at finite-temperature within the covariant energy density functional theory","authors":"Ante Ravlić, Esra Yüksel, Tamara Nikšić, Nils Paar","doi":"10.1103/physrevc.109.014318","DOIUrl":"https://doi.org/10.1103/physrevc.109.014318","url":null,"abstract":"In stellar environments nuclei appear at finite temperatures, becoming extremely hot in core-collapse supernovae and neutron-star mergers. However, due to theoretical and computational complexity, most model calculations of nuclear properties are performed at zero temperature, while those existing at finite temperatures are limited only to selected regions of the nuclide chart. In this study we perform the global calculation of nuclear properties for even-even <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mn>8</mn><mo>≤</mo><mi>Z</mi><mo>≤</mo><mn>104</mn></mrow></math> nuclei at temperatures in range <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mn>0</mn><mo>≤</mo><mi>T</mi><mo>≤</mo><mn>2</mn></mrow></math> MeV. Calculations are based on the finite-temperature relativistic Hartree-Bogoliubov model supplemented by the Bonche-Levit-Vautherin vapor subtraction procedure. We find that near the neutron-drip line the continuum states have significant contribution already at moderate temperature <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>T</mi><mo>≈</mo><mn>1</mn></mrow></math> MeV, thus emphasizing the necessity of the vapor subtraction procedure. Results include neutron emission lifetimes, quadrupole deformations, neutron-skin thickness, proton and neutron pairing gaps, entropy and excitation energy. Up to the temperature <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>T</mi><mo>≈</mo><mn>1</mn></mrow></math> MeV, the nuclear landscape is influenced only moderately by the finite-temperature effects, mainly by reducing the pairing correlations. As the temperature increases further, the effects on nuclear structures become pronounced, reducing both the deformations and the shell effects.","PeriodicalId":20122,"journal":{"name":"Physical Review C","volume":"7 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139483822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Complex scaling in finite volume","authors":"Hang Yu, Nuwan Yapa, Sebastian König","doi":"10.1103/physrevc.109.014316","DOIUrl":"https://doi.org/10.1103/physrevc.109.014316","url":null,"abstract":"Quantum resonances, i.e., metastable states with a finite lifetime, play an important role in nuclear physics and other domains. Describing this phenomenon theoretically is generally a challenging task. In this work, we combine two established techniques to address this challenge. Complex scaling makes it possible to calculate resonances with bound-state-like methods. Finite-volume simulations exploit the fact that the infinite-volume properties of quantum systems are encoded in how discrete energy levels change as one varies the size of the volume. We apply complex scaling to systems in finite periodic boxes and derive the volume dependence of states in this scenario, demonstrating with explicit examples how one can use these relations to infer infinite-volume resonance energies and lifetimes.","PeriodicalId":20122,"journal":{"name":"Physical Review C","volume":"17 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139476562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Spin dynamics in intermediate-energy heavy-ion collisions with rigorous angular momentum conservation","authors":"Rong-Jun Liu, Jun Xu","doi":"10.1103/physrevc.109.014615","DOIUrl":"https://doi.org/10.1103/physrevc.109.014615","url":null,"abstract":"We have revisited the spin dynamics in intermediate-energy heavy-ion collisions based on the improved spin- and isospin-dependent Boltzmann-Uehling-Uhlenbeck (SIBUU) transport model, particularly with the constraint of rigorous angular momentum conservation incorporated. We have studied the spin polarization of free nucleons and <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>tritons</mi><mo>/</mo><mmultiscripts><mi>He</mi><mprescripts></mprescripts><none></none><mn>3</mn></mmultiscripts></mrow></math> as well as the spin alignment of deuterons, and predicted the flow splittings for their different spin states. We have also demonstrated that the spin-dependent potential may enhance dissipations and thus have a non-negligible effect on the spin-averaged transverse flow at low collision energies. When rigorous angular momentum conservation in each spin-dependent nucleon-nucleon collision is incorporated, it affects the overall dynamics, the flow, and also the spin polarization, while the effects of the spin-orbit potential on the spin-related observables are still appreciable. The well-developed SIBUU model could be further extended to include hyperons or vector mesons, or used as a hadronic afterburner for spin-related studies in relativistic heavy-ion collisions, with more inelastic channels incorporated in the future.","PeriodicalId":20122,"journal":{"name":"Physical Review C","volume":"5 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139476482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Higher-order isospin-symmetry-breaking corrections to nuclear matrix elements of Fermiβdecays","authors":"L. Xayavong, N. A. Smirnova","doi":"10.1103/physrevc.109.014317","DOIUrl":"https://doi.org/10.1103/physrevc.109.014317","url":null,"abstract":"Within the nuclear shell model, we derive the exact expression for the isospin-symmetry breaking correction to the nuclear matrix element of Fermi &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mi&gt;β&lt;/mi&gt;&lt;/math&gt; decays. Based on a perturbation expansion in small quantities, such as the deviation of the overlap integral between proton and neutron radial wave functions from unity and of the transition density from its isospin-symmetry value, we demonstrate that &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;msub&gt;&lt;mi&gt;δ&lt;/mi&gt;&lt;mi&gt;C&lt;/mi&gt;&lt;/msub&gt;&lt;/math&gt; can be obtained as a sum of six terms. These terms comprise two leading order (LO) terms, two next-to-leading order (NLO) terms, one next-to-next-to-leading order (NNLO) term, and one next-to-next-to-next-to-leading order (NNNLO) term. While the first two terms have been considered in a series of shell-model calculations [J. C. Hardy and I. S. Towner, &lt;span&gt;Phys. Rev. C&lt;/span&gt; &lt;b&gt;102&lt;/b&gt;, 045501 (2020), and references therein], the remaining four terms have been neglected. A numerical calculation has been carried out for 24 superallowed &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow&gt;&lt;msup&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/msup&gt;&lt;mo&gt;→&lt;/mo&gt;&lt;msup&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt; transitions (18 isotriplets and six isoquintets) and three non-&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow&gt;&lt;msup&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/msup&gt;&lt;mo&gt;→&lt;/mo&gt;&lt;msup&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt; transitions, across the &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mi&gt;p&lt;/mi&gt;&lt;/math&gt; to &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow&gt;&lt;mi&gt;p&lt;/mi&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;/mrow&gt;&lt;/math&gt; shells. For most &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow&gt;&lt;msup&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/msup&gt;&lt;mo&gt;→&lt;/mo&gt;&lt;msup&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt; transitions, the higher-order contribution is of the order &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow&gt;&lt;msup&gt;&lt;mn&gt;10&lt;/mn&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mo&gt;%&lt;/mo&gt;&lt;/mrow&gt;&lt;/math&gt; or smaller, well below the typical theoretical errors quantified within the shell model with Woods-Saxon radial wave functions given in the reference cited above. However, for specific cases such as &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mmultiscripts&gt;&lt;mi&gt;Br&lt;/mi&gt;&lt;mprescripts&gt;&lt;/mprescripts&gt;&lt;none&gt;&lt;/none&gt;&lt;mn&gt;70&lt;/mn&gt;&lt;/mmultiscripts&gt;&lt;/math&gt; and &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mmultiscripts&gt;&lt;mi&gt;Rb&lt;/mi&gt;&lt;mprescripts&gt;&lt;/mprescripts&gt;&lt;none&gt;&lt;/none&gt;&lt;mn&gt;74&lt;/mn&gt;&lt;/mmultiscripts&gt;&lt;/math&gt;, where weakly bound effect dominates, it increases considerably, becoming comparable to or even exceeding the errors in the isospin mixing component of the LO terms. In the cases of &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mmultiscripts&gt;&lt;mi&gt;Mg&lt;/mi&gt;&lt;mprescripts&gt;&lt;/mprescripts&gt;&lt;none&gt;&lt;/none&gt;&lt;mn&gt;20&lt;/mn&gt;&lt;/mmultiscripts&gt;&lt;/math&gt; and &lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mmultiscripts&gt;&lt;mi&gt;Fe&lt;/mi&gt;&lt;mprescripts&gt;&lt;/mprescripts&gt;&lt;none&gt;&lt;/none&gt;&lt;mn&gt;48&lt;/mn&gt;&lt;/mmultiscripts&gt;&lt;/math&gt;, as well as in","PeriodicalId":20122,"journal":{"name":"Physical Review C","volume":"15 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139476560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Examination of the decay modes ofOg293−295","authors":"C. Nithya, K. P. Santhosh","doi":"10.1103/physrevc.109.014612","DOIUrl":"https://doi.org/10.1103/physrevc.109.014612","url":null,"abstract":"The α-decay chains of the isotopes <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mmultiscripts><mi>Og</mi><mprescripts></mprescripts><none></none><mrow><mn>293</mn><mo>,</mo><mn>294</mn><mo>,</mo><mn>295</mn></mrow></mmultiscripts></math> are studied in the present paper. The modified generalized liquid drop model (MGLDM) is used to study the α-decay half-lives. The results are then compared with other theoretical formalisms. The decay chains of these isotopes are predicted by comparing the α half-lives with the corresponding spontaneous fission half-lives. The study predicted a 5α chain from the isotope <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mmultiscripts><mi>Og</mi><mprescripts></mprescripts><none></none><mn>293</mn></mmultiscripts></math>, a 3α chain from <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mmultiscripts><mi>Og</mi><mprescripts></mprescripts><none></none><mn>294</mn></mmultiscripts></math>, and a 2α chain from <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mmultiscripts><mi>Og</mi><mprescripts></mprescripts><none></none><mn>295</mn></mmultiscripts></math>. The agreement between theoretical and experimental results emphasizes the applicability of the MGLDM in a superheavy region. Since the predicted half-lives are within the experimental limit, these isotopes can be detected in laboratories via α decay.","PeriodicalId":20122,"journal":{"name":"Physical Review C","volume":"28 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139464040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Fusion ofLi7withTl205at near-barrier energies","authors":"V. V. Parkar, Prasanna M., Ruchi Rathod, V. Jha, S. K. Pandit, A. Shrivastava, K. Mahata, K. Ramachandran, R. Palit, Md. S. R. Laskar, B. J. Roy, Bhushan Kanagalekar, B. G. Hegde","doi":"10.1103/physrevc.109.014610","DOIUrl":"https://doi.org/10.1103/physrevc.109.014610","url":null,"abstract":"The complete and incomplete fusion cross sections for the <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mmultiscripts><mi>Li</mi><mprescripts></mprescripts><none></none><mn>7</mn></mmultiscripts><mo>+</mo></mrow><mmultiscripts><mi>Tl</mi><mprescripts></mprescripts><none></none><mn>205</mn></mmultiscripts></math> reaction were measured at near barrier energies by the online characteristic <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>γ</mi></math>-ray detection technique. The complete fusion (CF) cross sections at energies above the Coulomb barrier were found to be suppressed by <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mo>∼</mo><mn>26</mn><mo>%</mo></mrow></math> compared to the coupled channel calculations. Reduced fusion cross sections for the present system at energies normalized to the Coulomb barrier were also found to be systematically lower than those with strongly bound projectiles forming a similar compound nucleus. The suppression observed in CF cross sections is found to be commensurate with the measured total incomplete fusion (ICF) cross sections. In the ICF cross sections, <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>t</mi></math>-capture is found to be dominant than <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>α</mi></math>-capture at all the measured energies. The systematic study of available CF, ICF, and total fusion data with the <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mmultiscripts><mi>Li</mi><mprescripts></mprescripts><none></none><mn>7</mn></mmultiscripts></math> projectile is performed.","PeriodicalId":20122,"journal":{"name":"Physical Review C","volume":"26 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139423477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}