三轴性和由五个观测量确定立方形状参数K3
Triaxiality and the determination of the cubic shape parameter K3 from five observables
摘要：
绝对和相对四极形状不变量q3和K3为β-刚性核提供了一个与模型无关的三轴性度量。我们将证明可以从少量的观测量中得到q3和K3。在刚性三轴转子模型和相互作用玻色子模型中，所作的近似值都保持在百分之几以内。形状参数K3是针对示例性的一组核给出的，并且被转换成几何变形参数β和γ的有效值。
英文摘要：
The absolute and the relative quadrupole shape invariants q3 and K3 provide a model independent measure of triaxiality for beta-rigid nuclei. We will show that one can obtain q3 and K3 from a small number of observables. The approximations which are made will be shown to hold within a few percent both in the rigid triaxial rotor model and the interacting boson model. The shape parameter K3 is given for an exemplary set of nuclei and is translated into effective values of the geometrical deformation parameters beta and gamma.
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