α

H a 2 = 1

H a 2 = 0.5

H a 2 = 2

0.5

1.3 × 10−5

1.35 × 10−6

1.5 × 10−4

1

2.3 × 10−6

8 × 10−7

9 × 10−5

2

1.4 × 10−4

1 × 10−5

1.55 × 10−3

4

0.54

6 × 10−5

1.7

10

0.42

0.11

0.32