Cluster structure of 21Ne and 21Na

TL;DR

This paper investigates the complex cluster structures of 21Ne and 21Na using the cluster shell model, revealing multiple coexisting cluster configurations and identifying several rotational bands linked to different cluster states.

Contribution

It introduces a detailed analysis of 21Ne and 21Na cluster structures, highlighting the coexistence of multiple cluster configurations and identifying new rotational bands.

Findings

Multiple cluster structures coexist in 21Ne and 21Na.

Seven rotational bands in 21Ne and four in 21Na identified.

Distinct cluster states linked to specific rotational bands.

Abstract

We study the cluster structure of 21Ne and 21Na within the framework of the cluster shell model (CSM) and show that they have a complex cluster structure with the coexistence of a 20Ne+n, 20}Ne+p structure and a 19Ne+2n, 19}F+2p structure. Seven rotational bands are identified in 21Ne and four in 21Na and assigned to single-particle cluster states, single-hole cluster states and vibrational states. The single-particle states are associated with the 20Ne+n and 20Ne+p cluster structure, while the single-hole states are associated with the 19Ne+2n and 19F+2p structure.