Ionization potential of radium monofluoride

2024/08/26 by S.G Wilkins, H.A. Perrett, Wilkins, S. G. +89 · 2 citations
Materials Science · Physics and Astronomy · #Atomic Physics (physics.atom-ph) #Atomic and Molecular Physics #Chemical Physics (physics.chem-ph) #Computational Physics (physics.comp-ph) #FOS: Physical sciences #Luminescence Properties of Advanced Materials #Nuclear Experiment (nucl-ex) #Nuclear Physics and Applications

paper · pdf · doi:10.48550/arxiv.2408.14673

openalex publication_date 2024/08/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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 (D₀) of 5.54[5] eV is presented. This confirms that radium monofluoride joins the small group of diatomic molecules for which D₀>IP, paving the way for precision control and interrogation of its Rydberg states.

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