中文
相关论文

相关论文: Fission dynamics within time-dependent Hartree-Foc…

200 篇论文

Background: At energies near the Coulomb barrier, capture reactions in heavy-ion collisions result either in fusion or in quasifission. The former produces a compound nucleus in statistical equilibrium, while the second leads to a…

核理论 · 物理学 2016-05-12 A. S. Umar , V. E. Oberacker , C. Simenel

Decay of $^{210}$Po compound nucleus formed in light and heavy-ion induced fusion reactions has been analyzed simultaneously using a consistent prescription for fission barrier and nuclear level density incorporating shell correction and…

核实验 · 物理学 2015-09-30 K. Mahata , S. Kailas , S. S. Kapoor

Nucleus-nucleus interaction potentials in heavy-ion fusion reactions are extracted from the microscopic time-dependent Hartree-Fock theory. When the center-of-mass energy is much higher than the Coulomb barrier energy, extracted potentials…

核理论 · 物理学 2009-11-13 Kouhei Washiyama , Denis Lacroix

The quasi-fission mechanism hinders fusion of heavy systems because of a mass flow between the reactants, leading to a re-separation of more symmetric fragments in the exit channel. A good understanding of the competition between fusion and…

We perform energy dependent calculations of independent and cumulative fission product yields for $^{235}$U, $^{238}$U, and $^{239}$Pu in the first chance fission region. Starting with the primary fission fragment distributions taken from…

核理论 · 物理学 2021-02-02 S. Okumura , T. Kawano , A. E. Lovell , T. Yoshida

Time-dependent Hartree--Fock (TDHF) method has been applied to various low-energy nuclear reactions, such as fusion, fission, and multinucleon transfer reactions. In this Mini Review, we summarize recent attempts to bridge a microscopic…

核理论 · 物理学 2020-03-16 Kouhei Washiyama , Kazuyuki Sekizawa

The well established macroscopic-microscopic (mac-mic) description of nuclear fission enables the prediction of fission fragment yields for a broad range of fissioning systems. In this work, we present several key enhancements to this…

核理论 · 物理学 2021-03-31 Marc Verriere , Matthew R. Mumpower

Energy dependence of fission observables is a key issue for wide nuclear applications. We studied real-time fission dynamics from low-energy to high excitations in the compound nucleus $^{240}$Pu with the time-dependent Hartree-Fock+BCS…

核理论 · 物理学 2021-03-31 Yu Qiang , Junchen Pei , Paul Stevenson

Our understanding of nuclear fission, a fundamental nuclear decay, is still incomplete due to the complexity of the process. In this paper, we describe a study of spontaneous fission using the symmetry-unrestricted nuclear density…

核理论 · 物理学 2009-08-18 A. Staszczak , A. Baran , J. Dobaczewski , W. Nazarewicz

The role of tensor force on the collision dynamics of $^{16}$O+$^{16}$O is investigated in the framework of a fully three-dimensional time-dependent Hartree-Fock theory. The calculations are performed with modern Skyrme energy functional…

核理论 · 物理学 2014-10-22 Gao-Feng Dai , Lu Guo , En-Guang Zhao , Shan-Gui Zhou

Collective mass tensor derived from the cranking approximation to the adiabatic time-dependent Hartree-Fock-Bogoliubov (ATDHFB) approach is compared with that obtained in the Gaussian Overlap Approximation (GOA) to the generator coordinate…

核理论 · 物理学 2014-12-09 A. Baran , J. A. Sheikh , J. Dobaczewski , W. Nazarewicz

In this manuscript we provide an outline of the numerical methods used in implementing the density constrained time-dependent Hartree-Fock (DC-TDHF) method and provide a few examples of its application to nuclear fusion. In this approach,…

核理论 · 物理学 2015-02-16 V. E. Oberacker , A. S. Umar

The first results of a new three-dimensional, finite temperature Skyrme-Hartree-Fock+BCS study of the properties of inhomogeneous nuclear matter at densities and temperatures leading to the transition to uniform nuclear matter are…

太阳与恒星天体物理 · 物理学 2011-05-25 W. G. Newton

Background: The time-dependent Hartree-Fock (TDHF) theory has been successful in describing low-energy heavy ion collisions. Recently, we have shown that multinucleon transfer processes can be reasonably described in the TDHF theory…

核理论 · 物理学 2014-12-24 Kazuyuki Sekizawa , Kazuhiro Yabana

Large-scale computations of fission properties are an important ingredient for nuclear reaction network calculations simulating rapid neutron-capture process (the r process) nucleosynthesis. Due to the large number of fissioning nuclei…

核理论 · 物理学 2024-04-04 Daniel Lay , Eric Flynn , Samuel A. Giuliani , Witold Nazarewicz , Leó Neufcourt

The tensor force is implemented into the time-dependent Hartree-Fock (TDHF) theory so that both exotic and stable collision partners, as well as their dynamics in heavy-ion fusion, can be described microscopically. The role of tensor force…

核理论 · 物理学 2018-07-19 Lu Guo , Cedric Simenel , Long Shi , Chong Yu

Background: Near-barrier fusion can be strongly affected by the coupling between relative motion and internal degrees of freedom of the collision partners. The time-dependent Hartree-Fock (TDHF) theory and the coupled-channels (CC) method…

核理论 · 物理学 2013-12-09 C. Simenel , M. Dasgupta , D. J. Hinde , E. Williams

Fusion cross-sections are computed for the $^{40}$Ca$+^{40}$Ca system over a wide energy range with two microscopic approaches where the only phenomenological input is the Skyrme energy density functional. The first method is based on the…

核理论 · 物理学 2015-06-19 C. Simenel , M. Dasgupta , D. J. Hinde , V. E. Oberacker , A. S. Umar , E. Williams

We study the fission dynamics of 240Pu within an implementation of the Density Functional Theory (DFT) extended to superfluid systems and real-time dynamics. We demonstrate the critical role played by the pairing correlations. The evolution…

核理论 · 物理学 2017-12-14 A. Bulgac , S. Jin , P. Magierski , K. J. Roche , I. Stetcu

We present a microscopic calculation of multi-nucleon transfer reactions employing the time-dependent Hartree-Fock (TDHF) theory. In our previous publication [Phys. Rev. C 88, 014614 (2013)], we reported our analysis for the multi-nucleon…

核理论 · 物理学 2016-11-10 Kazuyuki Sekizawa , Kazuhiro Yabana