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相关论文: Shell plus pairing effect arguments for cluster pr…

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A simple relation $(aZ_{c} + b)(Z_{d}/Q)^{1/2} + (cZ_{c} + d)$ of estimation of the half-life of cluster emission is further improved for cluster and $\alpha$-decays, separately, by incorporating isospin of parent nucleus as well as angular…

核理论 · 物理学 2023-08-08 G. Saxena , A. Jain

We investigate the formation of cluster crystals with multiply occupied lattice sites on a spherical surface in systems of ultra-soft particles interacting via repulsive, bounded pair potentials. Not all interactions of this kind lead to…

软凝聚态物质 · 物理学 2018-07-31 Stefano Franzini , Luciano Reatto , Davide Pini

Within the recently developed five-dimensional Langevin approach for the description of fission of heavy nuclei, we have calculated the fission fragments mass and kinetic energy distributions for the fission of $^{180}$Hg and $^{190}$Hg…

核理论 · 物理学 2025-03-06 F. A. Ivanyuk , C. Schmitt , C. Ishizuka , S. Chiba

The Woods-Saxon-Gaussian (WSG) potential is proposed as a new phenomenological potential to describe systematically the level scheme, electromagnetic transitions, and alpha-decay half-lives of the alpha-cluster structures in various…

核理论 · 物理学 2018-12-05 Dong Bai , Zhongzhou Ren

A novel mechanism of prompt nuclear fragmentation is proposed. Assuming micro-canonical or canonical equilibrium, it is shown that a strong enhancement of the accessible phase space volume, due to the diffuceness of the nuclear surface,…

核理论 · 物理学 2009-10-31 J. Toke , W. U. Schroeder

The formation of superheavy nuclei in $^{48}Ca+^{232}Th$, $^{238}U$, $^{242,244}Pu$ and $^{248}Cm$ reactions and their subsequent decay are studied within the quantum mechanical fragmentation theory (QMFT) and the QMFT based preformed…

核理论 · 物理学 2011-11-09 Sushil Kumar , M. Balasubramaniam , Raj K. Gupta , G. Munzenberg , W. Scheid

The ground-state spin and parity of a formed daughter in the radioactive Alpha-emitter is expected to influence the preformation probability of the Alpha and daughter clusters inside it. We investigate the Alpha and daughter preformation…

核理论 · 物理学 2015-10-14 W. M. Seif , M. M. Botros , A. I. Refaie

It is shown, that the Gamow-like model with only one adjustable parameter - radius constant is able to reproduce well the alpha-decay half-lives for all even-even nuclei with the proton number larger than 50. The systematics for odd-A and…

核理论 · 物理学 2015-01-19 K. Pomorski , M. Warda , A. Zdeb

Given a weighted graph, we introduce a partition of its vertex set such that the distance between any two clusters is bounded from below by a power of the minimum weight of both clusters. This partition is obtained by recursively merging…

概率论 · 数学 2020-03-16 Laurent Ménard , Arvind Singh

Radioactive decay of nuclei via emission of $\alpha$ particles has been studied theoretically in the framework of a superasymmetric fission model using the double folding (DF) procedure for obtaining the $\alpha$-nucleus interaction…

核理论 · 物理学 2008-11-26 D. N. Basu

On-shell effective theory approach has been widely used in search of various supersymmetric signals, in particular, gluino/squark pairs with long cascade decay chains in which complete matrix element calculations may encounter over-20…

高能物理 - 唯象学 · 物理学 2015-12-23 Kai Wang , Liucheng Wang , Tao Xu , Liangliang Zhang

Cold reaction valleys in the radioactive decay of superheavy nuclei {286}^112, {292}^114 and {296}^116 are studied taking Coulomb and Proximity Potential as the interacting barrier. It is found that in addition to alpha particle, 8^Be,…

核理论 · 物理学 2015-06-05 K. P. Santhosh , Sabina Sahadevan

The understanding of clustering aspects at the ground state of nuclei and in fast rotating ones within the framework of covariant density functional theory has been reviewed and reanalyzed. The appearance of many exotic nuclear shapes in…

核理论 · 物理学 2025-01-09 A. V. Afanasjev

Surface properties of neutron-neutron (T=1) pairing in semi-infinite nuclear matter in a hard wall potential are investigated in BCS approximation using the Gogny force. Surface enhancement of the gap function, pairing tensor and…

核理论 · 物理学 2009-10-31 M. Farine , P. Schuck

We investigate the role of the pairing field dynamics in low-energy heavy ion reactions within the nuclear time-dependent density functional theory extended to superfluid systems. Recently, we have reported on unexpectedly large effects…

核理论 · 物理学 2018-06-01 Kazuyuki Sekizawa , Piotr Magierski , Gabriel Wlazłowski

The nuclei below lead but with more than 126 neutrons are crucial to an understanding of the astrophysical $r$-process in producing nuclei heavier than $A\sim190$. Despite their importance, the structure and properties of these nuclei…

The $\alpha$ particle preformation in the even-even nuclei from $^{108}$Te to $^{294}$118 and the penetration probability have been studied. The isotopes from Pb to U have been firstly investigated since the experimental data allow us to…

核实验 · 物理学 2008-12-18 H. F. Zhang , G. Royer

Measurement of the fusion cross-section for neutron-rich light nuclei is crucial in ascertaining if fusion of these nuclei occurs in the outer crust of a neutron star. The fusion excitation function at near-barrier energies for the $^{19}$O…

Dawning neutron physics was more complex than one might expect. The chance that the neutron comprised a proton and an electron was diffusely taken into account after the discovery of the neutron. Moreover, uncertainties persisted about the…

物理学史与哲学 · 物理学 2013-01-01 Alberto De Gregorio

We study the important for the experiment features of the effect of the electron shell on alpha decay in the adiabatic approach. The effect is of tenths of a percent or less in magnitude, depending on the transition energy and the atomic…

核理论 · 物理学 2015-06-15 Feodor F. Karpeshin , Malvina B. Trzhaskovskaya