Abstract

The angular-momentum dependences are analyzed for parity splitting and electric dipole transitions in alternating-parity bands of heavy nuclei. It is shown that these dependences can be treated universally by employing a single parameter taken to be a critical angular momentum that characterizes the phase transition from octupole vibrations to a stable octupole deformation. Analytic expressions for parity splitting and the electric dipole transitional moment are obtained on the basis of a simple model. The results are compared with experimental data for various barium, cerium, and neodymium isotopes.

中文翻译：

---

重核交替奇偶带中八极形变的稳定化描述

摘要

针对重核的交替奇偶校验带中的奇偶分裂和电偶极跃迁，分析了角动量依赖性。结果表明，可以通过采用单个参数作为临界角动量来普遍处理这些依赖性，该参数表征了从八极振动到稳定的八极形变的相变。在一个简单模型的基础上，获得了奇偶分裂和电偶极跃迁矩的解析表达式。将结果与各种钡，铈和钕同位素的实验数据进行比较。