, 100% -
100%
, , (>408 ), (300 230 ), ( 214 ), ( 120 )
10 15 .
ij 3 . ,
65% -
10% -20%
5%
11 17 .
()
ϳ
,
()
( )
( , )
,
92%
α ( ) 7%
, , , , (0,78%)
(4-100%)
䳿
20 30
, ( )
(β )
(γ )
, , (238U), (232Th) (235U)
: (40K), (48Ca), (87Rb)
, 䳺 ( (14C) (3H)
ó ,
̳
|
|
, 䳺
,
( , , )
, ( )
40, 238U ( )
ϳ
40K, 226Ra, 222Rn
³
, ,
(, , )
- 0,04-0,60 / 40K 0,009-0,074 / 226Ra
- 11-18 / 40K 0,02-0,04 / 226Ra