Hello, I can't seem to find a comprehensive explanation for this recurring phenomenon on my XRF spectra graphs. It's a high intensity peak that occurs seemingly below the 0 keV energy mark. And it seem to be common to many graphs, yet nowhere seems to say what it actually is, aside from a rather vague 'electronic noise peak' or 'pulses', neither of which make sense, as noise is created via the fluorescence of materials in the X-ray tube, in the vicinity of the sample and in the detector, and other interactions in the sample. Noise creates actual transitions peaks as it results from the fluorecsence of actual elements - just not the sample elements! So what the hell IS that damn 0 keV peak?!