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An alpha particle is a particle produced during alpha decay. It's always just a helium-4 which is made of two protons and two neutrons but with no electrons. Th

An alpha particle is a particle produced during alpha decay. It's always just a helium-4 which is made of two protons and two neutrons but with no electrons. This is why we have to mine for helium because it is produced in the ground by alpha decay. It's different from normal helium because it doesn't have any electrons and it has an empty orbital which means it really really would like to have some electrons and also it's going crazy fast when it is created so that's why it's dangerous. But then once it takes those electrons from somewhere it becomes normal helium. You just don't want that happening in your body. It seems like the other commenters in this thread are alluding to the electron thing maybe? Not exactly sure what point they're making.

shkkmo 5y ago
I believe that is clear, those questions were intended to be read as ones to put to the nuclear engineer who claimed an alpha particle was not made of two nuetrons and two protons.
tsimionescu 5y ago
As far as I understand, the claim is actually that an Alpha particle is made up of quarks and gluons, the same number you would find in 2 protons and 2 neutrons, but that the proton and neutron are different things. It sounds like there's a very technical distinction about exactly how you define a particle. Essentially, I believe that the claim is something like saying that modeling an alpha particle as 2 neutrons and 2 protons loses some information that you would have if you model it as 12 quarks, because the 12 quarks interact in (slightly) different ways than a proton and a neutron would.
- jhgb 5y ago
  But that sounds like a difference between two models, not a difference between two physical objects. To me it seems that if you were to follow this line of thinking religiously, you could then never say things like "an atom of carbon has six protons", since, well, they're not quite protons according to this logic.

shkkmo 5y ago

I believe that is clear, those questions were intended to be read as ones to put to the nuclear engineer who claimed an alpha particle was not made of two nuetrons and two protons.

tsimionescu 5y ago

As far as I understand, the claim is actually that an Alpha particle is made up of quarks and gluons, the same number you would find in 2 protons and 2 neutrons, but that the proton and neutron are different things. It sounds like there's a very technical distinction about exactly how you define a particle. Essentially, I believe that the claim is something like saying that modeling an alpha particle as 2 neutrons and 2 protons loses some information that you would have if you model it as 12 quarks, because the 12 quarks interact in (slightly) different ways than a proton and a neutron would.

jhgb 5y ago
But that sounds like a difference between two models, not a difference between two physical objects. To me it seems that if you were to follow this line of thinking religiously, you could then never say things like "an atom of carbon has six protons", since, well, they're not quite protons according to this logic.