It is possible to cause artificial radioactivity by bombarding a nucleus with high velocity neutrons This process is called nuclear fission This reaction is the basis of nuclear power stations as you?

Answer 1

Nuclear fission in U-235 and Pu-239 produces heat which is then used to raise steam and generate electricity. In fact the fission process is most efficient with slow neutrons rather than fast ones, which is why reactors have a moderator (light or heavy water or graphite).

Induced radioactivity by exposure to fast neutrons is a different matter, material in the reactor like the control rods or the pressure vessel itself do become radioactive because they are as you say bombarded with neutrons, but this radioactivity only produces a trivial amount of extra heat from the reactor.

In small reactors not built for power production samples of various substances can be irradiated to make radioactive isotopes for medical and industrial use. In this type of reactor the heat from the fission process is generally thrown away to atmosphere, it might typically be a few megawatts.

Answer 2

No, the process described is actually nuclear fusion, not fission. Nuclear fission is the process of splitting a nucleus into smaller parts, while fusion is the process of combining two nuclei to form a heavier nucleus. Nuclear power stations primarily rely on nuclear fission for energy production.