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The scission of a nucleus into two fragments is at present the least understood part of the fission process, though the most important for the formation of the observables. To investigate the potential energy landscape at the largest…

核理论 · 物理学 2013-04-01 Fedir Ivanyuk

The spectroscopic quadrupole moment of the first excited state, $Q_{_S}(2^{+}_{1})$, at 1.634 MeV in $^{20}$Ne was determined from sensitive reorientation-effect Coulomb-excitation measurements using a heavy target and safe energies well…

Proton inelastic scattering experiments at energy E_p = 200 MeV and a spectrometer scattering angle of 0 degree were performed on 144,146,148,150Nd and 152Sm exciting the IsoVector Giant Dipole Resonance (IVGDR). Comparison with results…

The quasielastic scattering kaon-nucleus experiment performed at BNL is analyzed in a finite nucleus continuum random phase approximation framework, treating the reaction mechanism in Glauber theory up to two-step inelastic processes. A…

核理论 · 物理学 2009-10-30 A. De Pace

\noindent{\bf Background:} Deuteron-induced nuclear reactions are an essential tool for probing the structure of nuclei as well as astrophysical information such as $(n,\gamma)$ cross sections. The deuteron-nucleus system is typically…

核理论 · 物理学 2023-02-01 Linda Hlophe , Konstantinos Kravvaris , Sofia Quaglioni

Recent ineleastic electron-proton scattering experiments have led to rather accurate values for the N->Delta transition quadrupole moment Q(N->Delta).The experimental results imply a prolate (cigar-shaped) intrinsic deformation of the…

原子物理 · 物理学 2009-11-11 A. J. Buchmann

The potential-energy surfaces of an extended set of heavy and super-heavy even-even nuclei with $92 \le Z \le 126$ and isospins $40 \le N-Z \le 74$ are evaluated within the recently developed Fourier shape parametrization. Ground-state and…

核理论 · 物理学 2018-03-28 K. Pomorski , B. Nerlo-Pomorska , J. Bartel , C. Schmitt

The compression-mode giant resonances, namely the isoscalar giant monopole and isoscalar giant dipole modes, are examples of collective nuclear motion. Their main interest stems from the fact that one hopes to extrapolate from their…

核实验 · 物理学 2018-07-04 Umesh Garg , Gianluca Colò

The strong deformation splitting of the isoscalar giant monopole resonance (ISGMR), recently observed in ($\alpha,\alpha'$) reaction in prolate $^{24}$Mg, is analyzed in the framework of the Skyrme quasiparticle random-phase-approximation…

核理论 · 物理学 2016-02-17 J. Kvasil , V. O. Nesterenko , A. Repko , P. -G. Reinhard , W. Kleinig

The electric quadrupole response is investigated theoretically by HFB and QPM calculations along the Sn isotopic chain with special emphasis on excitations above the first collective state and below the particle threshold. Depending on the…

核理论 · 物理学 2011-06-27 N. Tsoneva , H. Lenske

We investigate reliability of Gamow-Teller transition strengths computed in the proton-neutron random phase approximation, comparing with exact results from diagonalization in full $0\hbar\omega$ shell-model spaces. By allowing the…

核理论 · 物理学 2007-05-23 Ionel Stetcu , Calvin W. Johnson

In this contribution we present some recent results about neutron halos in deformed nuclei. A deformed relativistic Hartree-Bogoliubov theory in continuum has been developed and the halo phenomenon in deformed weakly bound nuclei is…

核理论 · 物理学 2012-11-07 Lulu Li , Jie Meng , P. Ring , En-Guang Zhao , Shan-Gui Zhou

Electromagnetic multipole responses are key inputs to model the structure, decay and reaction of atomic nuclei. With the introduction of the finite amplitude method (FAM), large-scale calculations of the nuclear linear response in heavy…

核理论 · 物理学 2024-09-23 Tong Li , Nicolas Schunck , Mike Grosskopf

The coordinate-space Hartree-Fock-Bogoliubov (HFB) approach with quasiparticle blocking has been applied to study the odd-A weakly bound nuclei $^{17,19}$B and $^{37}$Mg, in which halo structures have been reported in experiments. The…

核理论 · 物理学 2015-06-16 Xueyu Xiong , Junchen Pei , Yinu Zhang , Yi Zhu

The isoscalar giant dipole resonance structure in $^{208}$Pb is calculated in the framework of a fully consistent relativistic random phase approximation, based on effective mean-field Lagrangians with nonlinear meson self-interaction…

核理论 · 物理学 2009-11-06 D. Vretenar , A. Wandelt , P. Ring

In order to explore the nature of collective modes in weakly bound nuclei, we have investigated deformation effects and surface flow patterns of isovector dipole modes in a shape-coexisting nucleus $^{40}$Mg. The calculations were done in a…

核理论 · 物理学 2017-09-13 Kai Wang , M. Kortelainen , J. C. Pei

Faddeev-Yakubovski equations in configuration space are used to solve four nucleon problem for bound and scattering states. Different realistic interaction models are tested, elucidating open problems in nuclear interaction description. On…

核理论 · 物理学 2009-11-11 R. Lazauskas , J. Carbonell

We review a method that we recently introduced to calculate the finite-temperature distribution of the axial quadrupole operator in the laboratory frame using the auxiliary-field Monte Carlo technique in the framework of the…

核理论 · 物理学 2018-03-14 Y. Alhassid , G. F. Bertsch , C. N. Gilbreth , M. T. Mustonen

The nuclear binding energies for 28 nuclei including several isotopic chains with masses ranging from A=64 to A=226 were evaluated using the Skyrme effective nucleon-nucleon interaction and the Extended Thomas-Fermi approximation. The…

核理论 · 物理学 2009-11-07 A. Dobrowolski , K. Pomorski , J. Bartel

A study of rotational properties of the ground superdeformed bands in \Hg{0}, \Hg{2}, \Hg{4}, and \Pb{4} is presented. We use the cranked Hartree-Fock-Bogoliubov method with the {\skm} parametrization of the Skyrme force in the…

核理论 · 物理学 2015-06-26 B. Gall , P. Bonche , J. Dobaczewski , H. Flocard , P. -H. Heenen