Shell and cluster states of 21 u0001 Ne studied with antisymmetrized molecular dynamics

摘要

The low-lying states of 21nu0001Ne are studied with antisymmetrized molecular dynamics for hypernuclei. We havenobtained ten rotational bands where the number of bands are increased compared to 20Ne by adding a u0001 hyperon.nAmong them, we focus on the Kπ = 0+n1n⊗ u0001s and Kπ = 0−n1n⊗ u0001s bands. The former has a shell-model-likenstructure that has u0001 in an s wave coupled to the ground band of 20Ne. The latter is a cluster state that has anα +17nu0001O dicluster structure. The difference between their structures leads to the binding energy of u0001 particle Bu0001nand reduction of the E2 transition probabilities B(E2).