Structure of β-Decay Strength Function S_β(E) in Halo Nuclei. Borromean Halo, Tango Halo, and Mixed Halo

Abstract

It is shown that when the parent nucleus has nn Borromean halo structure, then after Gamow-Teller (GT) β-decay of parent state or after M1 γ-decay of Isobar Analogue Resonance (IAR) the states with np tango halo structure or mixed np tango + nn Borromean halo structure can be populated. Resonances in the GT β-decay strength function S β (E) of halo nuclei may have np tango halo structure or mixed np tango + nn Borromean halo structure.