I know there is a lot of answers out there, but so far none really answered my question. Say I have this radioactive conductor sphere that has a negative charge. Of course, all the negative charges will be spread evenly on the surface and there SHOULD be 0 electric field inside the conductor. If this radioactive conductor now decays, and produces an alpha particle (which has a +2e charge), shouldn't the produced alpha particle move? As long as it is not in the dead center of a sphere, it should be attracted to one of the sides due to negative attraction force. If the particle moves because of the charge of the sphere, doesn't it suggest that there is an electric field that is moving the positive charge, and therefore suggests there IS an electric field?