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Table 1 SH setting conditions and their corresponding OL current values, magnitude of length, and rotation angle of the shadow contrast

From: Abnormal shadow contrast imaging for optimal objective lens condition in transmission electron microscope

Image Number

1

2

3

4

5

6

7

8

9

10

SH position from the top of the lower pole piece (mm)

6.00

6.33

6.67

7.00

7.33

7.67

8.00

8.33

8.66

9.00

OL current (A)

2.027

1.978

1.884

1.802

1.739

1.672

1.621

1.587

1.523

1.481

Length of the shadow contrast (nm)

84.2

68.6

64.1

38.5

29.7

26.6

25.0

24.2

30.8

33.1

Rotation angle (o)

1.3

14.0

21.1

29.6

41.0

45.8

52.6

57.8

67.5

71.6