Journal Article

Study of the deformed halo nucleus sup.31Ne with Glauber model based on microscopic self-consistent structures

Zhong, Shi-Yi, Zhang, Shi-Sheng, Smith, Michael S, Sun, Xiang-Xiang

2022

Overview

The exotic deformed nucleus [sup.31]Ne is studied with an approach that combines self-consistent structure and reaction theories. The deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc) is utilized to demonstrate that deformation and pairing correlations give rise to a halo structure with a large-amplitude p-wave configuration in [sup.31]Ne. Then the valence nucleon wave functions and angle-averaged density distributions of [sup.30]Ne from this theory are used as input for the Glauber reaction model to study the observables of neutron-rich neon isotopes to search halo signatures. With NL1 effective interaction, our predictions of the reaction cross sections for these exotic neon isotopes on a carbon target can better reproduce the experimental data than those from the relativistic mean field model for a spherical shape with resonances and pairing correlation contributions, and are roughly 3.3% (~ 50 mb) larger than those with Gaussian function-fitted densities of the core nuclei. The calculated one-neutron removal cross section at 240 MeV/nucleon, and the inclusive longitudinal momentum distribution of the [sup.30]Ne residues from the [sup.31]Ne breakup reaction are largely improved over previous theoretical predictions and agree well with data. These reaction evaluations indicate a dilute density distribution in coordinate space and are a canonical signature of a halo structure. Moreover, our predictions with the NL3 and PK1 effective interactions give slightly better descriptions of reaction observables for exotic neon isotopes. halo, relativistic model, Glauber model, reaction cross section, momentum distribution PACS number(s): 24.10.-i, 25.40.Lw, 24.10.Jv, 24.30.Gd

• Publisher: Springer