title: Time-resolved Auger decay in CsBr using high harmonics.
abstract: The temperature-dependent decay dynamics of innershell holes in CsBr was measured by using high harmonics. The measured lifetime was as short as 1.5 ps at 340 K due to increasing the Auger-allowed final state density in the Urbach exciton tail, whereas it is 1.1 ns at 10 K, determined by radiative recombination. The temperature-dependent Auger lifetime extrapolated to a high temperature corresponds to the fully energy-allowed Auger decay. In the model to be presented, this yields an interatomic Auger decay lifetime of 2.4+3.8/-1.5 fs, in line with a theoretical calculation for NaF.
authors.affiliation: Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8581, Japan.
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Shimizu
authors.forename: Taro
authors.initials: T
authors.lastname: Sekikawa
authors.forename: Teruto
authors.initials: T
authors.lastname: Kanai
authors.forename: Shuntaro
authors.initials: S
authors.lastname: Watanabe
authors.forename: Minoru
authors.initials: M
authors.lastname: Itoh