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相关论文: Quantified limits of the nuclear landscape

200 篇论文

The analysis of statistical and systematic uncertainties and their propogation to nuclear extremes has been performed. Two extremes of nuclear landscape (neutron-rich nuclei and superheavy nuclei) have been investigated. For the first…

核理论 · 物理学 2017-10-12 A. V. Afanasjev , S. E. Agbemava , D. Ray , P. Ring

A statistical approach based on the Weisskopf evaporation theory has been developed to describe the de-excitation process of highly excited heavy and superheavy nuclei, in particular for the proton-rich nuclei. The excited nucleus is cooled…

核理论 · 物理学 2016-11-28 Peng-Hui Chen , Zhao-Qing Feng , Jun-Qing Li , Hong-Fei Zhang

We generalize the theory of nuclear decay and capture of Gamow that is based on tunneling through the barrier and internal oscillations inside the nucleus. In our formalism an additional factor is obtained, which describes distribution of…

核理论 · 物理学 2017-11-27 Sergei P. Maydanyuk , Peng-Ming Zhang , Li-Ping Zou

We present a review of recent applications of the relativistic mean-field theory to the structure of nuclei close to the drip-lines. For systems with extreme isospin values, the relativistic Hartree-Bogoliubov model provides a unified and…

核理论 · 物理学 2009-10-31 D. Vretenar , P. Ring , G. A. Lalazissis

The production cross sections of heaviest isotopes of superheavy nuclei with charge numbers 112--118 are predicted in the $xn$--, $pxn$--, and $\alpha xn$--evaporation channels of the $^{48}$Ca-induced complete fusion reactions for future…

核理论 · 物理学 2020-07-17 J. Hong , G. G. Adamian , N. V. Antonenko , P. Jachimowicz , M. Kowal

Motivated by oceanographic observational datasets, we propose a probabilistic neural network (PNN) model for calculating turbulent energy dissipation rates from vertical columns of velocity and density gradients in density stratified…

流体动力学 · 物理学 2021-12-03 Sam F. Lewin , Stephen M. de Bruyn Kops , Gavin D. Portwood , Colm-cille P. Caulfield

Shape and multiple shape coexistence of nuclei are investigated throughout the nuclear chart by calculating the low-lying spectra and the quadrupole shape invariants for even-even nuclei with $10\leq Z\leq 104$ from the proton drip line to…

核理论 · 物理学 2023-02-16 Y. L. Yang , P. W. Zhao , Z. P. Li

Advances in architectural design, data availability, and compute have driven remarkable progress in semantic segmentation. Yet, these models often rely on relaxed Bayesian assumptions, omitting critical uncertainty information needed for…

计算机视觉与模式识别 · 计算机科学 2026-02-19 M. M. A. Valiuddin , R. J. G. van Sloun , C. G. A. Viviers , P. H. N. de With , F. van der Sommen

The appearance of nuclear clusters in stellar matter at densities below nuclear saturation is an important feature in the modeling of the equation of state for astrophysical applications. There are different theoretical concepts to describe…

核理论 · 物理学 2016-12-22 Helena Pais , Stefan Typel

After more than 80 years from the seminal work of Weizs\"acker and the liquid drop model of the atomic nucleus, deviations from experiments of mass models ($\sim$ MeV) are orders of magnitude larger than experimental errors ($\lesssim$…

核理论 · 物理学 2021-01-04 Andrea Idini

Bayesian networks are graphical models to represent the probabilistic relationships between variables in the Bayesian framework. The knowledge of all variables can be updated using new information about some of the variables. We show that…

数据分析、统计与概率 · 物理学 2021-10-22 Georg Schnabel , Roberto Capote , Arjan Koning , David Brown

We combine nonlocal effects with Bayesian Neural Network (BNN) methods to enhance the prediction accuracy of $\alpha$ decay half-lives. The results indicate that accounting for nonlocal effects significantly impacts the half-life…

核理论 · 物理学 2025-10-17 Xuanpeng Xiao , Panpan Qi , Gongming Yu , Haitao Yang , Qiang Hu

The prediction of cross sections for nuclei far off stability is crucial in the field of nuclear astrophysics. For spherical nuclei close to the dripline the statistical model (Hauser-Feshbach) approach is not applicable and direct…

核理论 · 物理学 2009-10-30 T. Rauscher , K. -L. Kratz , H. Oberhummer , J. Dobaczewski , P. Moeller , M. Sharma

The information on the symmetry energy and its density dependence is deduced by comparing the available data on the electric dipole polarizability $\alpha_D$ of ${}^{68}$Ni, ${}^{120}$Sn, and ${}^{208}$Pb with the predictions of the Random…

It has been suggested that a $\nu$p process can occur when hot, dense, and proton-rich matter is expanding within a strong flux of anti-neutrinos. In such an environment, proton-rich nuclides can be produced in sequences of proton captures…

太阳与恒星天体物理 · 物理学 2019-09-02 N. Nishimura , T. Rauscher , R. Hirschi , G. Cescutti , A. St. J. Murphy , C. Fröhlich

A method is proposed for the experimental measurement of neutron separation energies for nuclei far from stability. The procedure is based on determining cross sections for the production of nuclei, by projectile fragmentation, for which…

核实验 · 物理学 2009-11-10 W. A. Friedman , M. B. Tsang

Although nuclear fission can be understood qualitatively as an evolution of the nuclear shape, a quantitative description has proven to be very elusive. In particular, until now, there exists no model with demonstrated predictive power for…

核理论 · 物理学 2011-04-05 Jorgen Randrup , Peter Moller

We study the evolution of the (e,e'p) cross section on nuclei with increasing asymmetry between the number of neutrons and protons. The calculations are done within the framework of the distorted-wave impulse approximation, by adopting…

核理论 · 物理学 2011-09-02 C. Giusti , A. Meucci , F. D. Pacati , G. Co' , V. De Donno

We make a critical analysis on the theoretical calculations that lead to predictions of deeply bound kaonic states in nuclei. The model set-up, after dropping several important processes and channels, leads unavoidably to an unrealistic…

核理论 · 物理学 2009-11-11 E. Oset , H. Toki

Physics of nuclei at extreme values of the isospin is at the focus of present-day nuclear science. Experimentally, thanks to existing and emerging radioactive-ion-beam facilities, we are on the verge of invading the territory of extreme N/Z…

核理论 · 物理学 2011-04-15 J. Dobaczewski