-149, , :
NSm(t) = NSm NPm(t) = NPm, dNSm/dt = 0 = dNPm/dt (t) = idem =
:
0 = lPm Npm - saSm NSm (20.2.1)
0 = gPm sf5 N5 - lPm NPm (20.2.2)
, :
0 = gPm sf5 N5 - saSm NSm ,
:
(20.2.3)
: , , , - .
, :
, , (20.2.3):
(20.2.4)
, . (20.2.4) (gPm, sf5 s5), :
(20.2.5)
, q, : (), -235, q , , .
, , , , - .
, -1000 rSm - 0.82%, rSm - 0.69%. , (235U) , , .
20.3.
.
( t = 0 NSm = NPm = 0) (t) = idem = .
:
. (20.3.1)
, ( Np) , , . .20.2.
|
|
rSm(t) 5 10 15 t,
Np1
Np2 > Np1
Np3 = 100% N
.20.2.
-149 .
.20.2. , (W). , (20.3.1) t, W(t) = Npot, . , :
rSm(W)
0 W,..
2 4 6 8 10 12
rSm
.20.3.
.
, .
-1000 W 28 31 . . ( 3.3% 7 ).
, . ( 0.12 0.13 % ).