奇A核素135Nd中一对复合手性转动带。
A composite chiral pair of rotational bands in the odd-A nucleus 135Nd.
作者信息
Zhu S, Garg U, Nayak B K, Ghugre S S, Pattabiraman N S, Fossan D B, Koike T, Starosta K, Vaman C, Janssens R V F, Chakrawarthy R S, Whitehead M, Macchiavelli A O, Frauendorf S
机构信息
Physics Department, University of Notre Dame, Notre Dame, Indiana 46556, USA.
出版信息
Phys Rev Lett. 2003 Sep 26;91(13):132501. doi: 10.1103/PhysRevLett.91.132501. Epub 2003 Sep 25.
High-spin states in 135Nd were populated with the 110Pd(30Si,5n)135Nd reaction at a 30Si bombarding energy of 133 MeV. Two DeltaI=1 bands with close excitation energies and the same parity were observed. These bands are directly linked by DeltaI=1 and DeltaI=2 transitions. The chiral nature of these two bands is confirmed by comparison with three-dimensional tilted axis cranking calculations. This is the first observation of a three-quasiparticle chiral structure and establishes the primarily geometric nature of this phenomenon.
通过在133 MeV的30Si轰击能量下的110Pd(30Si,5n)135Nd反应布居了135Nd中的高自旋态。观测到两个激发能相近且宇称相同的ΔI=1带。这些带通过ΔI=1和ΔI=2跃迁直接相连。通过与三维倾斜轴推转计算进行比较，证实了这两个带的手征性质。这是对三准粒子手征结构的首次观测，并确立了这一现象主要的几何本质。
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