What are the nuclear reactions required to produce $""_""^239 Pu$ from $""_""^238 U$ under fast neutron bombardment?

Question

I know that $""_""^238 U$ almost never fissions, but instead tends to absorb neutrons, producing neptunium and plutonium.

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Answer 1 · 2017-12-14T10:13:48

See the reaction below

The reactions are

$""_92^238U+""_0^1n rarr ""_92^239U$

$""^239 U rarr "" ^ 239 Np + ""_-1 ^0 e$ , Emission $beta^-$

$"" ^ 239 Np rarr "" ^ 239 Pu + ""_-1 ^0 e$ , Emission $beta^-$