Abstract
The effect of cerium trifluoride on the ion emission in the KF-K3AlF6 system is studied by high-temperature mass spectrometry. It is shown that negative ions’ signals are absent when the system is evaporated from a clean Knudsen nickel cell. The ions are only detected after the long-term heating of the KF-K3AlF6 system or the preliminary annealing of CeF3. The results are explained by the formation in the cell of a salt layer with high anionic conduction induced by either KF or CeF3, respectively.
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