Scattering dilution method in Fourier transform infrared spectrometry.

For the measurement methods of powder samples or muddy samples using infrared spectrometry, we proposed the scattering dilution method and scattering filter method. In our methods, the fabricating pellets are made by pressing mixed alkali halide powders (KBr/CsI). That is why the dilution powder's (KBr/CsI powders') packing ratio becomes almost 100%, thus giving the pellets a sufficient scattering effect.

X-ray microprobe system for XRF analysis and spectroscopy at SPring-8 BL39XU.

An X-ray microprobe system for X-ray fluorescence (XRF) analysis and spectroscopy has been developed at SPring-8 BL39XU; it comprises an X-ray focusing or collimation system, energy-dispersive (ED) and wavelength-dispersive (WD) XRF spectrometers, and a sample-scanning system. The conventional ED spectrometer will be utilized for qualitative and quantitative trace-element analysis, and the WD spectrometer will be used both for trace-element analysis and XRF spectroscopy. A combination of monochromated undulator radiation and the WD spectrometer will enable resonant XRF spectroscopy using brilliant hard X-ray undulator radiation.

Experimental comparison between the conversion electron yield and X-ray fluorescence in catalyst analysis.

To evaluate the application of the conversion-electron-yield (CEY) method in catalyst analysis, the intensities of the CEY and X-ray fluorescence (XRF) as a function of glancing angle were measured simultaneously. The probing depth of the CEY method is shallower than that of the XRF method. The CEY method also shows potential application for the analysis of even a powder specimen of a low-concentration zeolite catalyst.

Material analysis end-station of the Hyogo-ken beamline at SPring-8.

Plans to construct surface-analysis equipment which will be placed on beamline BL24XU of SPring-8 are presented. There are three experimental hutches in BL24XU, which are available simultaneously by using diamond monochromators as beam splitters. The purpose of the surface-analysis equipment is the simultaneous measurement of fluorescent and diffracted X-rays in grazing-incidence geometry.

Correlation between Oscillation Modes and Penetration Rate of Protons in the Three-Phase-Liquid-Membrane Oscillation System.

In the three-phase liquid-membrane system consisting of water-nitrobenzene-water, the decrease in pH of aqueous phases is found to be accompanied with the spontaneous electric oscillation of several modes. The increase rates of proton concentration in each aqueous phase are found to differ considerably in each modes of electric oscillation. Furthermore, the presence of an aqueous phase without surfactant is found to accelerate the proton penetration rate through nitrobenzene-water interface.