It is made by neutron capture by Bismuth 209--->Bi210 then undergoes a beta decay to Polonium 210. It has a Specific Activity of 4,500 Curies/Gram. (gulp). The Alpha particle has an energy of 5.3 MeV.
It could only be identified if there were "tramp" traces of other nuclides with it.
Tiny amounts were used in 'Staticmaster" brushes.