First observation of excited states in 184Pb:: spectroscopy beyond the neutron mid-shell

被引：64

作者：

Cocks, JFC ^{[1
]}

Muikku, M

Korten, W

Wadsworth, R

Chmel, S

Domscheit, J

Greenlees, PT

Helariutta, K

Hibbert, I

Houry, M

Jenkins, B

Jones, P

Julin, R

Juutinen, S

Kankaanpaa, H

Kettunen, H

Kuusiniemi, P

Leino, M

Le Coz, Y

Lucas, R

Mergel, E

Page, RD

Savelius, A

Trzaska, W

机构：

[1] Univ Jyvaskyla, Dept Phys, Accelerator Lab, SF-40351 Jyvaskyla, Finland

[2] Univ York, Dept Phys, York YO1 5DD, N Yorkshire, England

[3] Univ Bonn, Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[4] Univ Liverpool, Dept Phys, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England

来源：

EUROPEAN PHYSICAL JOURNAL A | 1998年 / 3卷 / 01期

关键词：

D O I：

10.1007/s100500050144

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Excited states have been identified for the first time in Pb-184, the first even-even Pb isotope beyond the 82 < N < 126 mid-shell, using the recoil-decay tagging (RDT) technique. A collective band built on the first-excited 2(+) state has been observed. This resembles those seen in Pb-186,Pb-188 and the Hg isotones, and can thus be associated with a prolate-deformed shape. Variable moment of inertia (VMI) fits of the prolate 0(+) level energies in Pb-184,Pb-186,Pb-188 indicate that the minimum appears at N = 103, the same neutron number at which the corresponding minimum in Hg isotopes is observed.

引用

页码：17 / 20

页数：4

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