:

4.42. 43?

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>>>

4.42. 43?

1937 . (19011958) D ? 21 (. 4.15) . Mo 43 . :

A42Mo + 21 = A43 + 1Tc + 10n.

, , : (18861948) (. 4.40) . 10-10 . Tc, . (. 4.60) .

1940 . By - , -99 .

Tc , (. 4.41) (. 4.5). . , -238 6% -99. , 20- 1,5 Tc. Tc . 50%- 1 -235 0,6% -99. 10 Pu 140 . .

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: 0.142. /Cache: 0 / 0