, 93,5 % 239Pu. .
1.
, . , , 238U, . , 240Pu, 241Pu 242Pu, . , 240Pu, 241Pu 242Pu, , , .
, 239Pu, , , , 240 242 , , , 240Pu 241Pu , 239Pu, - , . 239Pu . , , , .
, , , , , , , , . 240Pu 242Pu , 241Pu , 239Pu.
2.
. ( -40, -65), . ( -7), - . ( , -26). 1994 . 1999 , 2010 .
, , , . 1988 .
3.
. . 3.75 ( 4*1030) .
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4.
, -238:
U238 + n -> U239 -> Np239 -> Pu239
, :
0n1 + 92U238 -> 92U239 -> -1e0 + 93Np239 -> -1e0 + 94Pu239
-239 -240:
Pu239 + n -> Pu240
, . . , , .
- B- . 26 1944, - 250 , - 6 . 200 , 1200 5 /.
:
. -238 -235. U-235 2.5 . , U-238, U-235.
, . , U-238 U-235 . . U-238 ( ), U-235 (U-235 , ).
, - . , , . , . , , U-235 (U-238 ). U-238 U-235.
. Pu-240 . Pu-239 Pu-240.
Pu-240 :
1. , Pu-239, .
2. , . Pu-240 , .
( ) - . , , - , - . - U-235 ( 1940-) - , . - ( 1950-) , , .
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, , Pu-240 (<7%), " "; Pu-240 20%, " ".
, U-235 U-238 , Pu-240.
Pu-240:
: . Pu-240 ( , ).
: , . , ( , , ). , , Davy Crocket, .
. :
. Pu-240 .
(, Pu-240) , - . . , , .
( 99.96%). , - , . 5.3 , , - 11 . .
- , :
520 , (Ted Magel) (Nick Dallas) - 23 1944:
- . - , .
:
: Pu-240, Pu-241 Pu-242. .
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Pu239 + n -> Pu240
Pu240 + n -> Pu241
Pu241 + n -> Pu242
:
U238 + n -> U237 + 2n
U237 -> (6.75 , -) -> Np237
Np237 + n -> Np238
Np238 -> (2.1 , -) -> Pu238
() -/ (-/). , -/, . - 33 000 -/. ( ) 1000 -/. 600 -/, 1000 -/ ( - , ). 100 -/, , -239 ( 0.9-1% Pu-240, ).