Figure 6
(a) An example of the X-ray radiographic image recorded under high P–T conditions (18 GPa, 1673 K). The upper and lower shadows indicate the WC anvils, whose gap was ∼1 mm under this condition. (b) The one-dimensional profile of brightness at the central parts of the radioisotope image of (a). (c) The position of the dark line detected by image analysis (black dots) and the result of a linear least-squares fitting for the points (gray line). The sample length corresponds to the interval between the two straight lines. |