As I vaguely recall from a long time ago, the big problem would be in localizing that single electron.
However, if you can accept an answer based on probability, one could dilute a beta-emitting isotope to such an extent that over any given period, on average, one electron would be emitted. How you would detect that in the presence of all of the background noise is another question. John
They are firing hole bunch of particles, not just one, in that circular thing.
There is a standard experiment in quantum mechanics where they fire electrons one by one. And they have detectors, that can detect single particle.
I was just curious. I would like to do some QM experiments, that are not too big, or too expensive. Just plainly weird. Kind of wanted to see that wave/particle duality for myself.