Superdeformation in 68Zn:: Evidence for a new, neutron-rich island of superdeformation in A ∼ 70 nuclei

被引:25
作者
Devlin, M [1 ]
Afanasjev, AV
Clark, RM
LaFosse, DR
Lee, IY
Lerma, F
Macchiavelli, AO
MacLeod, RW
Ragnarsson, I
Ring, P
Rudolph, D
Sarantites, DG
Thirolf, PG
机构
[1] Washington Univ, Dept Chem, St Louis, MO 63130 USA
[2] Lund Inst Technol, Dept Math Phys, S-22100 Lund, Sweden
[3] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany
[4] Latvian Acad Sci, Nucl Res Ctr, LV-2169 Salaspils, Latvia
[5] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA
[6] Univ Munich, Sekt Phys, D-85748 Garching, Germany
关键词
D O I
10.1103/PhysRevLett.82.5217
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A superdeformed rotational structure is reported in the stable nucleus Zn-68. It has a transition quadrupole moment (Q(t)) of 2.5(-0.4)(+0.7) e b (beta(2) approximate to 0.4), as measured by the residual Doppler shift method. Theoretical calculations suggest that two different configurations are possible candidates for this band. One is built without h(11/2) neutrons, as seen in superdeformed bands in the A similar to 60 region, while the other involves one h(11/2) neutron in analogy with superdeformed bands in the A similar to 80 region. The second of these candidate configurations is preferred, thus establishing a new, neutron-rich (relative to the line of beta stability) region of superdeformation with Z similar to 30 and N similar to 38.
引用
收藏
页码:5217 / 5220
页数:4
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