An analyser for measuring roentgenstrahlung in a desired energy range with a filter, a main -, and an additive - sekundaerstrahler, as well as with detectors for detecting the of the radiation emitted by each sekundaerstrahlern

摘要

X-ray analyser is for selective quantitive spectral analysis within specified energy ranges with a sensitivity is not 10-2%. Incident radiation passes through a filter whose absorption edge matches the upper limit of the specified energy range and impinges on an absorber whose absorption edge matches the lower limit of the specified range. The X-rays pass on to a sec. filter and emissions from prim. and sec. stages are measured by gaseous, proportional or Geiger Muller counters and a difference signal evaluated representing the intensity of incident radiation.