(a) Photograph of the powder diffractometer consisting of six MYTHEN detectors and an auto-sampler. (b) Details of the auto-sampler. Photographs of the (c) five-axis sample stage, sample holder, He gas stream device, and (d) capillary gas cell (MicrotracBEL Corp.) mounted on the sample stage. The capillary with diameters of 0.4 mm and 0.5 mm can be used for this gas cell.