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Prog. Theor. Phys. Vol. 77 No. 5 (1987) pp. 1178-1191

Yrast Structure Change of ²⁰Ne

Hiroshi Kazama

Department of Physics, Hokkaido University, Sapporo 060
and
Reseach Center for Nuclear Physics, Osaka University, Ibaraki 567

(Received July 18, 1986)

Abstract:

The structure of yrast states in ¹⁰Ne is investigated in the framework of (¹⁶O-α)+(¹⁶O^*(1p-1h)-α) cluster model. Inthe spin region from J=0 to J=8, the yrast states which have dominantly a (sd)⁴ configuration with SU(3)(8,0) symmetry form the ground-band. In the spin region higher than the cutoff spin, however, the yrast states (10₁⁺ and 12_a⁺ have typical ¹⁶O^*(3^-)-α structure and do not belong to the ground-band. The ¹⁶O^*(3^-)-α states appear also in lower spin region and form a rotational-band. These states are stable against α-decay at least for J≤12. The 8₂⁺ state which belongs to this band may be assigned to the one observed experimentally. Since these states have relatively large SU(3) (11,1) component, these ¹⁶O^*(3^-)-α states can also be considered as members of a 1⁺ band.

URL : http://ptp.ipap.jp/link?PTP/77/1178/
DOI : 10.1143/PTP.77.1178

[ Full Text PDF : FREE ACCESS (669K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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