Attosecond streaking clocks the ultrafast emission of Auger electrons



-->Jitter free: artistic depiction of a self-referencing attosecond streaking experiment. The inherent delay between the emission of the two types of electron leads to a characteristic ellipse in the analysed data. In principle, the position of individual data points around the ellipse can be read like the hands of a clock to reveal the precise timing of dynamical processes. (Courtesy: Daniel Haynes/Jörg Harms)
The decay lifetime associated with the emission of Auger electrons from atoms has been measured to sub-femtosecond precision using a technique called self-ref