Hi everyone, We know that positrons are emitted from certain isotopes and that isotopes form as a by-product of nuclear fission in reactors. So, I'm curious if positrons could be manufactured by the neutron bombardment of a stable isotope, such as Na, and then using the resulting beta-emitting isotope as a positron source? The positrons could then be channeled into a Penning Trap for storage. Sodium is cheaper than high energy lasers and gold discs. Neutrons are plentiful in fission reactors, if not neutron tube devices. And positrons have charge and so can be contained with EM fields. Of course there are always details, but would this idea generally work? Thanks to everyone in advance.