Speaker
Description
Application of small-angle x-ray scattering (SAXS) to a measurement of the temporal evolution of plasma expansion with nanometer spatial and femtosecond temporal resolution was established recently [1]. Here a grating target with a sub-micron structure was irradiated by a high-intensity laser pulse, and the grating expansion in the lateral direction was probed by an XFEL pulse. In our research, we utilized a silicon rod assembly with a sub-micron structure as a target instead of a grating, that is the dimension of the structure is extended from two to three. The temporal evolution of the columnar plasma induced by a high-intensity laser pulse was probed by SAXS changing the diameter and interval of the rods. In this talk, the advantages and disadvantages of SAXS for the three-dimensional structure will be discussed.
[1] Kluge et al., Phys. Rev. X 8, 031068 (2018).
