Buscar
Mostrando ítems 1-10 de 36
Artículo
Radiative capture reaction for Ne 17 formation within a full three-body model
(American Physical Society, 2016)
Background: The breakout from the hot Carbon-Nitrogen-Oxigen (CNO) cycles can trigger the rp-process in type I x-ray bursts. In this environment, a competition between 15O(α,γ )19Ne and the two-proton capture reaction 15O(2p,γ ...
Artículo
Semi-microscopic folding model for the description of two-body halo nuclei
(American Physical Society, 2014)
One-neutron halo nuclei, composed of a weakly bound particle coupled to a core nucleus, are studied within a particle-plus-core model. A semi-microscopic method to generate the two-body Hamiltonian of such a system, including ...
Artículo
9Be scattering within a four-body continuum-discretized coupled-channels framework
(EDP Sciences - SIF, 2016-05-11)
The scattering of 9Be on 208Pb is addressed within a four-body Continuum-Discretized Coupled-Channels (CDCC) framework, considering a three-body α + α + n projectile plus a structureless target. The projectile states are ...
Artículo
Relationship between X(5) models and the interacting boson model
(The American Physical Society, 2010)
The connections between the X(5) models [the original X(5) using an infinite square well, X(5)-β8, X(5)-β6, X(5)-β4, and X(5)-β2], based on particular solutions of the geometrical Bohr Hamiltonian with harmonic potential ...
Artículo
Disentangling phase transitions and critical points in the proton-neutron interacting boson model by catastrophe theory
(Elsevier, 2014)
We introduce the basic concepts of catastrophe theory needed to derive analytically the phase diagram of the proton–neutron interacting boson model (IBM-2). Previous studies [1–3] were based on numerical solutions. We here ...
Artículo
Reactions induced by 9Be in a four-body continuum-discretized coupled-channels framework
(Springer Nature, 2015-06-01)
We investigate the elastic scattering of 9Be on 208Pb at beam energies above (50MeV) and below (40MeV) the Coulomb barrier. The reaction is described within a four-body framework using the Continuum-Discretized Coupled-Channels ...
Artículo
Phase diagram for a cubic-Q interacting boson model Hamiltonian: Signs of triaxiality
(American Physical Society, 2011)
An extension of the Interacting Boson Model that includes the cubic (QI×QI×Q I)(0) term is proposed. The potential energy surface for the cubic quadrupole interaction is explicitly calculated within the coherent state ...
Artículo
Three-body nuclei and their astrophysical implications: The case of 6He
(American Institute of Physics, 2013)
The analytic THO method [1] is generalized to study three-body nuclei of astrophysical interest, and applied to 6He. Results are consistent with previous publications and experimental data [2, 3].
Artículo
Phase diagram of the two-fluid Lipkin model: A "butterfly" catastrophe
(American Physical Society, 2016-03-31)
Background: In the past few decades quantum phase transitions have been of great interest in nuclear physics. In this context, two-fluid algebraic models are ideal systems to study how the concept of quantum phase transition ...
Artículo
Core excitations in the structure and reactions of halo nuclei
(EDP Sciences, 2014-03-20)
We analyse the resonant break-up of halo nuclei including possible excitations of the core both in the structure of the halo nucleus and in the reaction dynamics. The structure of the halo nucleus is treated in the ...