NSTp i Afi Y666

2nNSTP V A2 If we replace k in the expression for the cross-section we have

128n55

Table 6.2 Coefficients for computing the Rayleigh scattering cross-section.

Molecule

A(x10~5)

B(xl0~3)

A

(5

n2

29.06

7.70

0.0305

1.05

o2

26.63

5.07

0.0540

1.10

Ar

29.06

7.70

0.0305

1.00

air

28.71

5.67

0.0350

1.06

co2

43.9

6.4

0.0805

1.15

co

32.7

8.1

0.080

1.15

H2

13.58

7.52

0.022

1.038

nh3

37.0

12.0

0.001

1.002

and so the cross-section (cm2 ) can be computed from

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