Rattling motion of ~(140)Ce(← ~(140)La) confined in the hexaboride cage

W. Sato; A. Shinohara; Y. Ohkubo

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Rattling motion of ~(140)Ce(← ~(140)La) confined in the hexaboride cage

机译：局限在六硼化物笼中的〜（140）Ce（←〜（140）La）的咔嗒声

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Rattling motion of the probe ~(140)Ce(← ~(140)La) confined in the B cage of LaB_6 was observed by means of the time-differential perturbed angular correlation technique. The time scale of the motion is in the order of 10~(11)-10~(10) s at room temperature. The activation energy of the slow motion at higher temperatures (160 to 773 K) was deduced to be E_a=21.3(8) meV. At lower temperatures down to 10 K, a transitive state to motional freezing of the rattling was evidently observed, but the motion is still active for 76(2)% of the probe ions at this low temperature.

机译：利用时差摄动角相关技术，观测了LaB_6 B笼中探针〜（140）Ce（←〜（140）La）的咔嗒声。在室温下，运动的时间尺度约为10〜（11）-10〜（10）s。在较高温度（160至773 K）下，慢动作的活化能被推算为E_a = 21.3（8）meV。在较低的温度（低至10 K）下，明显观察到了运动到咔嗒声的运动冻结，但是在此低温下，运动对于76％（2）％的探针离子仍然有效。

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《Physical review》 |2008年第1期|37-40|共4页
作者
W. Sato; A. Shinohara; Y. Ohkubo;
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moesbauer effect; other gamma-ray spectroscopy; nuclear resonance and relaxation; dynamics and kinematics of a particle and a system of particles;

机译：莫斯鲍尔效应其他γ射线光谱学;核共振和弛豫;粒子和粒子系统的动力学和运动学;

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机译：六硼化物中Ce-140（<-La-140）的超精细相互作用-艺术。没有。 132403
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Rattling motion of ~(140)Ce(← ~(140)La) confined in the hexaboride cage

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