METHOD OF RECORDING X-RAY ABSORPTION SPECTRA WITH TIME RESOLUTION Russian patent published in 2025 - IPC G01N23/20 

FIELD: physics.

SUBSTANCE: invention can be used for registration of X-ray absorption spectra with time resolution. Essence of the invention consists in the fact that an X-ray beam is diffracted on an optical element, which is recorded by a detector with continuous adjustment of its angular position in accordance with the generator signal, hysteresis-free bending actuators providing fast periodic modulation of energy of monochromatic radiation of an X-ray beam are used as an optical element. Intensity of the modulated beam is continuously recorded by a detector before and after passing the beam through the analysed sample. Obtained time dependences of the beam intensity are then converted into spectral dependences to obtain an X-ray spectrum of the sample by time scanning of the detector signal using a multichannel analyser synchronized with the control generator. Based on the results of processing the continuous stream of signals from the detector, a dependence of the absorption index on radiation energy is created, i.e. classical type of absorption spectrum. Recording time of one absorption spectrum is up to 10^-2 s.

EFFECT: simplifying the design of the apparatus for recording X-ray absorption spectra with time resolution and enabling a more accurate method of recording absorption spectra.

1 cl, 6 dwg, 1 tbl