RESOLUTION OF THE W-179-ISOMER ANOMALY - EXPOSURE OF A FERMI-ALIGNED S-BAND

被引:49
作者
WALKER, PM [1 ]
DRACOULIS, GD [1 ]
BYRNE, AP [1 ]
FABRICIUS, B [1 ]
KIBEDI, T [1 ]
STUCHBERY, AE [1 ]
机构
[1] UNIV SURREY,DEPT PHYS,GUILDFORD GU2 5XH,SURREY,ENGLAND
关键词
D O I
10.1103/PhysRevLett.67.433
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The K-pi = 35-/2, five-quasiparticle isomer in W-179 is shown to decay into the region of a backbend in the 7-/2[514] band, allowing for the first time the identification of a full set of aligned-band states. Destructive interference results from level mixing in the band-crossing region. The deduced gamma-ray branching ratios are used to establish the mixing matrix elements and to show that the aligned band has a high value of the K quantum number. The properties of well-defined alignment and yet also high K provide the first clear example of a Fermi-aligned s band. The anomalous decay of the isomer itself is now explained.
引用
收藏
页码:433 / 436
页数:4
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