TY - JOUR
T1 - Two-neutron halo nuclei in one dimension
T2 - Dineutron correlation and breakup reaction
AU - Hagino, K.
AU - Vitturi, A.
AU - Pérez-Bernal, F.
AU - Sagawa, H.
PY - 2011/1/3
Y1 - 2011/1/3
N2 - We propose a simple schematic model for two-neutron halo nuclei. In this model, the two valence neutrons move in a one-dimensional mean field, interacting with each other via a density-dependent contact interaction. We first investigate the ground-state properties and demonstrate that the dineutron correlation can be realized with this simple model due to the admixture of even- and odd-parity single-particle states. We then solve the time-dependent two-particle Schrödinger equation under the influence of a time-dependent one-body external field, in order to discuss the effect of dineutron correlation on nuclear breakup processes. The time evolution of two-particle density shows that the dineutron correlation enhances the total breakup probability, especially for the two-neutron breakup process, in which both the valence neutrons are promoted to continuum scattering states. We find that the interaction between the two particles definitely favors a spatial correlation of the two outgoing particles, which are mainly emitted in the same direction.
AB - We propose a simple schematic model for two-neutron halo nuclei. In this model, the two valence neutrons move in a one-dimensional mean field, interacting with each other via a density-dependent contact interaction. We first investigate the ground-state properties and demonstrate that the dineutron correlation can be realized with this simple model due to the admixture of even- and odd-parity single-particle states. We then solve the time-dependent two-particle Schrödinger equation under the influence of a time-dependent one-body external field, in order to discuss the effect of dineutron correlation on nuclear breakup processes. The time evolution of two-particle density shows that the dineutron correlation enhances the total breakup probability, especially for the two-neutron breakup process, in which both the valence neutrons are promoted to continuum scattering states. We find that the interaction between the two particles definitely favors a spatial correlation of the two outgoing particles, which are mainly emitted in the same direction.
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U2 - 10.1088/0954-3899/38/1/015105
DO - 10.1088/0954-3899/38/1/015105
M3 - Article
AN - SCOPUS:79551649375
VL - 38
JO - Journal of Physics G: Nuclear and Particle Physics
JF - Journal of Physics G: Nuclear and Particle Physics
SN - 0954-3899
IS - 1
M1 - 015105
ER -