Abstract A family of four odd parity bands in 127Xe has been investigated via in-beam γ-ray spectroscopy and conclusive evidence for the first and second phonon longitudinal wobbling excitations has been found. Spectroscopic measurements confirm the predominant E2 character of the Δ I = 1 transitions between the wobbling bands. This provides the first experimental evidence of longitudinal wobbling mode associated with a neutron configuration.

中文翻译：

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127Xe 中的多声子纵向摆动

摘要 127Xe 中的 4 个奇偶校验带家族已通过束内 γ 射线光谱进行了研究，并发现了第一次和第二次声子纵向摆动激发的确凿证据。光谱测量证实了摆动带之间 Δ I = 1 跃迁的主要 E2 特征。这提供了与中子配置相关的纵向摆动模式的第一个实验证据。