Table 4: Integral cross sections for Positronium formation (10-16cm2).

E(eV)

FBA

SBP

CCC

EXPT.1

EXPT.2

0

0.0

0.00

0.00

0.0

0.0

7

0.3

0.15

0.20

-

-

8

2.2

1.18

0.60

1.0

0.6

10

3.4

2.02

1.60

2.2

2.0

15

4.2

2.89

3.00

3.1

3.0

20

3.4

2.53

2.40

2.4

2.6

30

2.2

1.79

1.00

1.4

1.8

40

1.0

0.85

0.60

0.6

0.8

50

0.4

0.35

0.40

0.2

0.5