Pair production inside the atom?

In summary, the conversation discusses the lack of electron-positron production inside a Hydrogen atom and the possibility of pair production in theoretical nuclei with a high number of protons. It is mentioned that pair production can occur when two lead nuclei are close to each other, and this is studied at the LHC. The conversation also mentions the Schwinger limit and the presence of electric fields above this limit, but questions why this limit does not seem to apply in certain cases. The conversation concludes by questioning whether there is a process that could occur without violating energy conservation.
  • #1
andresB
629
375
Why there is no electron-positron production inside the, let say, Hydrogen atom?. I know that the electric field near nucleus get modified by some form factors making it not as big as the Coulomb field, but still i think is still very big.
 
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  • #2
Where should the energy come from? Which process would not violate energy conservation?

A theoretical nucleus with something like 150+ protons without any electrons might be able to make pair production because the electron ground state would be so deeply bound its binding energy would be sufficient to make a positron, but those nuclei don't exist. You can still get pair production if two lead nuclei pass very close to each other, mimicing such a heavy nucleus. This is studied at the LHC.
 
  • #3
My confusions is that above the Schwinger limit it is supposed to be pair productions. Due to the form of the coulomb field electric fields above the Schwinger limit can be found, why in this case that limit seems to not matter?.
 
  • #4
Again, which process would you expect to see that does not violate energy conservation?
If there is no such process, there is nothing that could happen.
 

FAQ: Pair production inside the atom?

What is pair production inside the atom?

Pair production inside the atom is a phenomenon in which a high-energy photon interacts with an atomic nucleus and produces an electron and a positron. This process is only possible in the presence of a strong electric field and is a manifestation of Einstein's famous equation E=mc^2.

What role do subatomic particles play in pair production?

Subatomic particles, such as electrons and positrons, are crucial to the process of pair production inside the atom. When a high-energy photon interacts with an atomic nucleus, it can convert its energy into the mass of an electron-positron pair. The subatomic particles then carry away the excess energy in the form of kinetic energy.

What is the significance of pair production inside the atom?

Pair production inside the atom is significant because it helps us understand the fundamental nature of matter and energy. It also plays a crucial role in particle physics and has practical applications in medical imaging and radiation therapy.

How is pair production inside the atom related to the uncertainty principle?

The uncertainty principle states that it is impossible to know both the position and momentum of a particle with absolute certainty. In pair production inside the atom, the high-energy photon converts into an electron and positron, violating the conservation of energy and momentum. This uncertainty in momentum allows for the creation of these particles out of seemingly nothing.

Can pair production occur in a vacuum?

Yes, pair production can occur in a vacuum as long as there is a strong electric field present. This is because the process relies on the conversion of energy into mass, not the presence of other particles. However, the probability of pair production occurring decreases as the energy of the photon decreases.

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