Two-neutron halo structure of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">F</mml:mi><mml:mprescripts/><mml:none/><mml:mn>31</mml:mn></mml:mmultiscripts></mml:math>

Abstract

We apply the Gamow shell model to study $^{25--31}\mathrm{F}$ isotopes. As both internucleon correlations and continuum coupling are properly treated therein, the structure shape of $^{31}\mathrm{F}$ at large distance can be analyzed precisely. For this, one-nucleon densities, root-mean-square radii, and correlation densities are calculated in neutron-rich fluorine isotopes. It is then suggested that $^{31}\mathrm{F}$ exhibits a two-neutron halo structure, built from both continuum coupling and nucleon-nucleon correlations.

Topics & Concepts