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Improvement of depth resolution by vertical incidence method.

B0002.jpg

Improvement of depth resolution by vertical incidence method.

B0002.jpg
B0002.jpg

SIMS: Secondary Ion Mass Spectrometry

■Measurement Method for Depth Direction Distribution (1) Limitations of Depth Direction Resolution in Oblique Incidence Method The dependence of depth direction resolution on primary ion energy in the oblique incidence method was investigated using δ-doped samples (Figure 1). It was found that in the oblique incidence method, there is a limit to the improvement of depth direction resolution due to the roughness of the crater bottom (Figure 2). (2) Improvement of Depth Direction Resolution by Vertical Incidence Method Figure 3 shows the relationship between the half-width of the B peak (δ-doped sample) and primary ion energy in both vertical and oblique incidence methods. In the region below 1 keV of primary ion energy, where there were limitations in improving resolution with the oblique incidence method, improvements in resolution have been achieved with the vertical incidence method.

Related Link - https://www.mst.or.jp/casestudy/tabid/1318/pdid/32…

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Evaluation of trace impurity concentration and composition distribution

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Improvement of Depth Direction Resolution by Vertical Incidence Method_B0002

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