Ultrafast Molecular Three-Electron Auger Decay

作者：Feifel Raimund^*; Eland John H D; Squibb Richard J; Mucke Melanie; Zagorodskikh Sergey; Linusson Per; Tarantelli Francesco; Kolorenc Premysl; Averbukh Vitali^*

来源：Physical Review Letters, 2016, 116(7): 073001.

DOI：10.1103/PhysRevLett.116.073001

Three-electron Auger decay is an exotic and elusive process, in which two outer-shell electrons simultaneously refill an inner-shell double vacancy with emission of a single Auger electron. Such transitions are forbidden by the many-electron selection rules, normally making their decay lifetimes orders of magnitude longer than the few-femtosecond lifetimes of normal (two-electron) Auger decay. Here we present theoretical predictions and direct experimental evidence for a few-femtosecond three-electron Auger decay of a double inner-valence-hole state in CH3F. Our analysis shows that in contrast to double core holes, double inner-valence vacancies in molecules can decay exclusively by this ultrafast threeelectron Auger process, and we predict that this phenomenon occurs widely.

• 出版日期2016-2-19