IOP Publishing, Journal of Physics: Conference Series, 11(635), p. 112031, 2015
DOI: 10.1088/1742-6596/635/11/112031
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We report on experimental and theoretical study of collective Auger decay of double inner-valence vacancy in fluoromethane, in which two electrons simultaneously fill the vacancies and a third electron is ejected to continuum. Calculations predict the respective lifetime of the double vacancy state to be in the femtosecond range, typical for two-electron Auger decay. Measured electron spectra indirectly support this rather surprising result.