Electron Microprobe Analysis

Under separate cover I have returned to you your sample E-6284.The micro- probe examination of this sample has been completed.The area which you designated No. 3 was the one chosen for examination and a backacatter electron picture of this region is shown in Figure 1.The sample had to be remounted to fit the probe holder and therefore repolishing was necessary.The results obtained from this sample are as follows:1, Qualitative analysis was made in the white region next to the edge; 12 from the edge (which was the gray area in the etched photograph; and 2,400 from the edge, which was in the "good" area).No difference in qualitative analysis was found.However, this does not eliminate the possibility of there…