This invention includes: an x-ray plasma source that produces primary x-rays; an x-ray optic that transmits and focuses the primary x-ray onto a sample jet from which fluorescence x-ray are emitted; and a microcalorimeter array detector that measures the energy of the incoming fluorescence x-rays, producing and x-ray spectrum of the sample’s state.
Presently, there are no commercial tools for x-ray absorption and emission spectroscopy with picosecond time resolution. Additionally, there are no tabletop tools for x-ray emission spectroscopy with picosecond time resolution. Previously, x-ray emission spectroscopy with this level of time resolution was only performed at three large x-ray free electron laser facilities (one in the U.S., one in Japan, and one in Europe). This invention changes all of that.