Investigation of 10Be and its cluster dynamics from nonlocalized clustering concept

TL;DR

This paper extends the nonlocalized clustering concept to 10Be using the THSR wave function, successfully describing its structures, energy spectrum, and neutron correlations with good agreement to experimental data.

Contribution

It introduces the application of the THSR wave function to 10Be, including the chain orbit structure, and explores cluster dynamics and neutron correlations for the first time.

Findings

Good agreement with experimental energy spectra and radii.

First application of THSR wave function to 10Be structures.

Detailed analysis of neutron density distributions and cluster dynamics.

Abstract

We extend the new concept of nonlocalized clustering to the nucleus 10Be with proton number Z=4 and neutron number N=6 (N=Z+2). The Tohsaki-Horiuchi-Schuck-R\"opke (THSR) wave function is formulated for the description of different structures of 10Be. Physical properties such as energy spectrum and root-mean-square radii are calculated for the first two 0+ states and corresponding rotational bands. With only one single THSR wave function, the calculated results show good agreement with other models and experimental values. We apply, for the first time, the THSR wave function on the chain orbit ({\sigma}-orbit) structure in the 0^+_2 state of 10Be. The ring orbit ({\pi}-orbit) and {\sigma}-orbit structures are further illustrated by calculating the density distribution of the valence neutrons. We also investigate the dynamics of ff-clusters and the correlations of two valence neutrons in 10Be.