: ? ( ) , . , 4 H He (26,72 ):
H + H D +e+ +n
D+ H He +g
He + H He + e+
4 H He +2++ 26,72
, , , - .
, . - :
H+ C N+g+ 1,9
N C++
C + H N +g
N + H O +g
O N+e+
N + H C + H
4 H H +2e++(26,72 )
, -.
, . :
(p, g):
:
,
. (n, g), b - . .
, , . 90 % , , . - , .
N (p, n) O
,
N (n,p) ,
, 2.
(n,g) He (n,p) .
, , . , 129I(1,6·107), 244Pu (8,2·107), 235U(7,1·107), 238U(4,5·109 ), 232Th (1,4·1010), 40K(1,3·109). 235U, 238U, 232Th , . , - 235U, 238U 232Th , .
|
|
-, - , (a,n), . Na F(a,n) Na
- . , - .
. 238U Pu 2,4∙104:
U(n, ) U Np Pu ,
238U 2,25∙106 :
U(n, 2n) U Np
Th U c 1,63∙105 :
Th (n, ) Th U
, Np, Pu 233U .
(n,g)