137Cs 90Sr , , .
, - . 137Cs .
137Cs
1) , ;
2) .
137Cs , , .
90Sr.
, 3-4 , , .
90% 137Cs 70-90% 90Sr. 137Cs 2,4%, 90Sr 1,8%. 0,17% 137Cs , 90Sr 21%.
0,023% 137Cs 0,014% 90Sr.
:
- . 137Cs 90Sr - ;
- ( ) 137Cs , 137Cs ;
- , .
, () 137Cs 90Sr / , 1987 .
137Cs 90Sr , .
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, , , . , .
. :
1) ( , );
2) ( );
3) ( , ).
, - - . .