Hello Physics Enthusiasts The other day I received in the mail a uranium ore sample from United Nuclear, with a radiation measurement of 2,500cpm, intending to use it as a particle source for my replication of the famous Gold-Foil experiment, the theory for which was devised by Ernest Rutherford (he didn't actually perform the experiment himself, regardless of what most people today think). I was just wondering if this would be a good alpha source. If not, what else could I find for relatively cheap that would be adequate for my purposes? Plus any information on what to look for in particle sources would be greatly appreciated. Thanks.