- 155 -


injected with the hydrogen coolant, a spatially independent seed ratio, s, is defined as the ratio of seed density to coolant density:


NS
SNH


Using (8.57) and (8.58) in (8151), the second derivative of the temperature distribution becomes


(8.58)


d 2T                 dT
2 F(r,s)  =  -   D+ d (D22
dr2               2   r+(2


- D23) )(   - D24 1a -               T 3


(8.59)


where


        1
D21  = r + c


rE [O,F]


  ,       r >
  r
  dKU       dK H    dK'
N~ U -+ N H(T   + s  -)


J2 2 =


KU    +   H +   K S NH
R NU     (R +        1-


    2 3 D23 -


   D 3S(r) KR U      H         NH
24  - 6-a    N  + (1 + s) NH


(8.60)


with S(r) given by (8.24). The temperature gradient is evaluated using (8.52) with F(r') replaced by F(r',s)


U22