  Bragg coherent x-ray diffractive imaging is a powerful technique for
investigating dynamic nanoscale processes in nanoparticles immersed in
reactive, realistic environments. Its temporal resolution is limited, however,
by the oversampling requirements of 3D phase retrieval. Here we show that
incorporating the entire measurement time series, which is typically a
continuous physical process, into phase retrieval allows the oversampling
requirement at each time step to be reduced leading to a subsequent improvement
in the temporal resolution by a factor of 2 to 20 times. The increased time
resolution will allow imaging of faster dynamics and of radiation dose
sensitive samples. This approach, which we call "chrono CDI", may find use in
improving time resolution in other imaging techniques.
