U233 and Pu239

U

U238 and Pu239

U238 and Th239

the most fissionable material

the basic fuel for nuclear paints

basic raw material for nuclear plants

the material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material

%age of U235 has been artificially increased

%age of U has been artificially increased

%age of U234 has been artificially increased

extra energy is pumped from outside

nucleus

electron

proton

meson

neutron

proton

atom

electron