/ / /
/ II. / /

: 23 | : 337
.

The Official Report on the Development of the Atomic Bomb Under the Auspices of the United States Government.
i / . .

2.12. I , ( -) U-238 U-239, . (.. ) U-238. U-238 . U-235 , , U-235 U-238 U-238, , , . U-235 , , U-238 .

, U-235 1:140, . 1940. , , 1:2. , U-235 , .


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