Vyvey K, Chmel S, Neyens G, Hübel H, Balabanski D L, Borremans D, Coulier N, Coussement R, Georgiev G, Nenoff N, Pancholi S, Rossbach D, Schwengner R, Teughels S, Frauendorf S
Instituut voor Kern- en Stralingsfysica, University of Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium.
Phys Rev Lett. 2002 Mar 11;88(10):102502. doi: 10.1103/PhysRevLett.88.102502. Epub 2002 Feb 26.
The quadrupole moment of the 11(-) isomer in 196Pb has been measured by the level mixing spectroscopy method. This state has a pi(3s(-2)(1/2)1h(9/2)1i(13/2))11(-) configuration which is involved in most of the shears band heads in the Pb region. The first directly measured value of Q(s)(11(-)) = (-)3.41(66) b, coupled to the previously known quadrupole moment of the nu(1i(-2)(13/2))12(+) isomer allows us to estimate the quadrupole moment of the 16(-) shears band head as Q(s)(16(-)) = -0.32(10) b. The experimental values are compared to tilted axis cranking calculations, giving insight into the validity of the additivity approach to couple quadrupole moments and on the amount of deformation in the shears bands.
通过能级混合光谱法测量了196Pb中11(-)异构体的四极矩。该态具有π(3s(-2)(1/2)1h(9/2)1i(13/2))11(-)组态，它涉及铅区大多数剪刀带的带头。首次直接测量得到的Q(s)(11(-)) = (-)3.41(66) b，结合之前已知的ν(1i(-2)(13/2))12(+)异构体的四极矩，使我们能够估计16(-)剪刀带带头的四极矩为Q(s)(16(-)) = -0.32(10) b。将实验值与倾斜轴转动计算结果进行比较，有助于深入了解耦合四极矩的可加性方法的有效性以及剪刀带中的形变量。
