I dont know how well its possible, but you could fake alpha radiation by simply emitting 2 neutrons and two protons in the same direction.
(Or, alternatively, add alpha radiation as a new element. Then again, its properties would need to make it distinct from neut and prot, so thats likely not feasible.)
Potbelly:
I wanted to keep POLO mostly like it is now, because I don't see a reason to change it.
It's a generic radioactive element, it's basically a motionable neutron spout.
Problem with these reactions is that I have to visualise them and imagine their possibilities.
If someone would help me add to the reaction scheme I've made so far, I would be very grateful!
The reactions should involve interesting mechanics that are exploitable.
Not all necessarily need to be original, some of them may simply produce heat, or only pressure, or only light.
POLO-2 should be like a nexus for chemistry in powder toy, simply because it can offer that function.
For example,
WATR() contacts POLO-0, WATR() becomes WATR(POLO).
WATR() contacts POLO-1, WATR() becomes WATR(URAN).
WATR() contacts POLO-2, WATR() becomes HYGN, POLO-2 becomes POLO-2(OXYG).
Then in some other reaction, you can have that element only react with POLO-2(OXYG).For example,
SALT() contacts POLO-0, SALT() becomes SALT-1.
If SALT-1 is dissolved in WATR() it will become SNOW(URAN) or something.
Something like this, if you are reading, please do add.
Giving otherelements isotopes would be messy, but its a can-do for POLO.
Also, I agree that, in hindsight, POLO needs a higher output rate (I'm the one who chose it's current rate, so that's saying a lot)