Neutron halo, tritons and alpha clusters in the nucleus ${}^{8}He$

Abstract

Recent experiments clearly demonstrate the importance of the excited state $2^{+}$ at 1.8 MeV in the substruture ${}^{6}He$ for the ground state of the nucleus ${}^{8}He$. It is shown here that this means that the ground state structure of ${}^{8}He$ rather than being $\alpha$ + 4n is actually ${}^{3}H$ + ${}^{3}H$ +2n. As such the pair of tritons would form a compact core around which the two valence neutrons provide a halo structure in ${}^{8}He$. Hence both ${}^{6}He$ and ${}^{8}He$ are two neutron halo nuclei but with cores of quite different nature. All this demonstrates significance of triton clustering in neutron rich nuclei.

6 pages, no figures

References in corpus (1)

• Triton clustering in neutron rich nuclei and Ikeda - like diagrams