P

4 Pouo2 y

Because Pmo/P^ ~ 1/450 , and according to Eq. 3.12.23 uo/u < 7 for Yc = 4/3, we obtain approximately

Pw = (1/4VaoPocosYo((uju) - 1)(u/uo)2 . (3.12.26) Then CR diffusion coefficient will be determined by

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