Sure, but it would be gold 203. The alchemist transmuting a kilogram of lead into gold in such a way would never have to worry about bacterial and viral disease ever again, as ²⁰³Au has a halflife of ~60s, meaning he would be standing next to something giving more than 2.4*10^22 disintegrations per second. Each disintegration gives off on the order of magnitude of 1 MeV, yielding a total power of around 3 GW (or 1 ton TNT/s) for the moment the experimental setup stays together. In fact, such an alchemist would never have to worry about anything ever again.

Sure, but it would be gold 203. The alchemist transmuting a kilogram of lead into gold in such a way would never have to worry about bacterial and viral disease ever again, as ²⁰³Au has a halflife of ~60s, meaning he would be standing next to something giving more than 2.4*10^22 disintegrations per second. Each disintegration gives off on the order of magnitude of 1 MeV, yielding a total power of around 3 GW (or 1 ton TNT/s) for the moment the experimental setup stays together). In fact, such an alchemist would never have to worry about anything ever again.