On the use of polycapillary structures to improve laboratory Energy-Dispersive X-ray Diffractometry and Reflectometry

Focusing Polycapillary Optics and Their Applications

“…Thus, capillary optics can be used as a low pass filter, using the same principle as for the mirrors commonly used for synchrotron and plasma facilities. With this low pass filter, higher-order harmonics can be removed from the output of a crystal monochromator [44] or from conventional sources for energy-dispersive X ray diffractometry and reflectometry [45]. With the optics, high anode voltages can be used to increase the intensity of the characteristic lines without increasing the high energy background.…”

Total reflection X-ray fluorescence analysis using polycapillaries. A comparison with conventional setups

“…3 shows minimum detection limits obtained for the three configurations of TXRF experiments. Simulation programs indicate that polycapillaries suppress the soft part of the incident spectrum [8]. It is caused by the X-ray absorption by the polycapillary material that acts in a selective way as a function of the photon energy, removing the softer energetic components more effectively.…”

Characterization of homemade x‐ray polycapillaries

“…Simulation programs show that it is caused by the x-ray absorption by the polycapillary material that acts in a selective way as a function of the photon energy, removing the softer energetic components more effectively. 15 Besides, these simulation programs predict that the high-energy components are slightly reduced by polycapillaries formed by cylinder-shaped channels as lens 1. The predictions agree very well with the observed effect of lens 1 on the spectral distribution of the white beam synchrotron radiation.…”