氡氟化物的电离势
Ionization potential of radium monofluoride
AI总结：
研究测量了氡氟化物的电离势并验证了其解离能大于电离势，为精确控制其瑞利态提供了依据。
摘要：
氡氟化物（RaF）的电离势（IP）被测量为4.969(2)[10] eV，揭示了碱土金属单氟化物系列中相对论效应的增强。结果与一种相对论耦合簇预测的4.969[7] eV一致，该预测纳入了量子电动力学修正。使用相同计算方法，给出了解离能（D₀）的改进计算结果为5.54[5] eV。这证实了氡氟化物成为少数几种解离能大于电离势的双原子分子之一，为精确控制和探测其瑞利态铺平了道路。
英文摘要：
The ionization potential (IP) of radium monofluoride (RaF) was measured to be 4.969(2)[10] eV, revealing a relativistic enhancement in the series of alkaline earth monofluorides. The results are in agreement with a relativistic coupled-cluster prediction of 4.969[7] eV, incorporating up to quantum electrodynamics corrections. Using the same computational methodology, an improved calculation for the dissociation energy ($D_{0}$) of 5.54[5] eV is presented. This confirms that radium monofluoride joins the small group of diatomic molecules for which $D_{0}>\mathrm{IP}$, paving the way for precision control and interrogation of its Rydberg states.
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