We investigate the dineutron correlations in ${}^7\mathrm{H}$. The ground state of ${}^7\mathrm{H}$ is solved by superposing many AMD (antisymmetrized molecular dynamics) Slater determinants with various $t+n+n+n+n$ configurations based on AMD triple-S (AMD superposition of selected snapshots). The mixing of dineutron cluster components is estimated by calculating the squared overlap with the wave function of the dineutron condensate, which is an extension of the studies on the $\alpha$ condensate in $4N$ nuclei. The calculated results show significant mixing of components of dineutron clusters ($t+{}^{2}n+{}^{2}n$) with a spatially extended distribution ($~70\%$) much larger than that of ${}^8\mathrm{He}$, where the core nucleus is changed from $t$ to ${}^4\mathrm{He}$.

• Received 18 January 2009

DOI:https://doi.org/10.1103/PhysRevC.80.021304