Dineutron structure in $^{8}$He
| dc.creator | Kanada-En'yo, Yoshiko | |
| dc.date | 2007-07-14 | |
| dc.date.accessioned | 2026-07-07T10:56:43Z | |
| dc.date.available | 2026-07-07T10:56:43Z | |
| dc.description | The ground and excited states of $^{8}$He were investigated with a method of antisymmetrized molecular dynamics(AMD). We adopted effective nuclear interactions which systematically reproduce the binding energies of $^4$He, $^6$He and $^8$He. The ground state of $^8$He has both the $j$-$j$ coupling feature($p_{3/2}$ closure) and the $L$-$S$ coupling feature($^4$He$+2n+2n$) with a slight tail of dineutron at the long distance region. The theoretical results give an indication of the $0^+_2$ state with dineutron gas-like structure. The dineutron structure, $^4$He+$2n$+$2n$, of this state is similar to the $3α$-cluster structure of the $^{12}$C($0^+_2$) state which has been interpreted as an $α$ condensate state. Since the $^8$He($0^+_2$) state has a significant overlap with the dineutron condensate wave function where two dineutrons are moving in $S$ wave around the $α$ core with a dilute density, we suggest that this theoretically predicted $0^+_2$ state is a candidate of the dineutron condensate state. | |
| dc.description | 12 pages, 5 figures, submitted to PRC | |
| dc.identifier | https://arxiv.org/abs/0707.2120 | |
| dc.identifier | http://arxiv.org/abs/0707.2120 | |
| dc.identifier | Phys.Rev.C76:044323,2007 | |
| dc.identifier | doi:10.1103/PhysRevC.76.044323 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/186509 | |
| dc.subject | Nuclear Theory | |
| dc.title | Dineutron structure in $^{8}$He | |
| dc.type | text |