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To illustrate the process of synchrotron radiation induced reduction of tetrachloroauric solutions, a confocal synchrotron radiation X‐ray spectroscopy experiments system has been introduced to monitor the depth‐resolved elemental Au distribution and chemical species during the Au reduction reaction. Combining the results from confocal X‐ray spectroscopy with that from X‐ray contrast imaging, the mechanism of synchrotron radiation induced Au reduction, along with the process of Au deposition, were proposed. These demonstrations provide novel avenues to spatially resolved analysis of in situ solution radiolysis. [ABSTRACT FROM AUTHOR]

Simulations of the periods, split regularities and mirror symmetries of the glitch pattern of a Si(111) crystal along with the azimuthal angles are presented. The glitch patterns of Si(111) double-crystal monochromators (DCMs) are found to be the superposition of the two sets of glitch patterns from the two crystals. The optimal azimuthal orientation ϕ1,2 = [(2 n+1)π]/6 ( n = 0, ±1, ±2...) for Si(111) DCMs to achieve the least amount of glitches in the hard X-ray region has been suggested. [ABSTRACT FROM AUTHOR]