METHOD FOR CORRECTING THE STACKING PHENOMENON APPLIED TO X-RAY SPECTRUMS ACQUIRED USING A SPECTROMETRIC SENSOR

摘要

The invention concerns a method for correcting a measured spectrum of X radiation (Spmes) t according to a number of channels Nc, each channel i corresponding to an energy range between Ei and Ei + ?Ei, including: - determining the function dti,,j (k) determining the size of the temporal deviation ?t interval separating two interactions with energy Ei and Ej, the stacking of which leads to a detected energy value Ek, - determining, from said function dti,,j(k), the probability function Pi,,j (k) that an event counted in a channel k corresponds to a stack of two interactions, respectively of energies Ei and Ej, - determining, from said probability function Pi,,j (k), a stack spectrum (Emp), which is the part of the measured spectrum (Spmes), that corresponds only to the stacks alone, - calculating or estimating at least a first corrected spectrum (Spcor), by the difference between the measured spectrum (Spmes) and the stack spectrum (Emp).