Dynamics of Photoelectrons and Structural Changes of Tungsten Trioxide Observed by Femtosecond Transient XAFS.

Yohei UemuraDaiki KidoYuki WakisakaHiromitsu UeharaTadashi OhbaYasuhiro NiwaShunsuke NozawaTokushi SatoKohei IchiyanagiRyo FukayaShin-ichi AdachiTetsuo KatayamaTadashi TogashiSigeki OwadaKanade OgawaMakina YabashiKeisuke HatadaSatoru TakakusagiToshihiko YokoyamaBunsho OhtaniKiyotaka Asakura

Published in: Angewandte Chemie (International ed. in English) (2015)

The dynamics of the local electronic and geometric structures of WO3 following photoexcitation were studied by femtosecond time-resolved X-ray absorption fine structure (XAFS) spectroscopy using an X-ray free electron laser (XFEL). We found that the electronic state was the first to change followed by the local structure, which was affected within 200 ps of photoexcitation.

Keyphrases

high resolution
dual energy
electron microscopy
high speed
mass spectrometry
computed tomography
single molecule
magnetic resonance imaging
magnetic resonance