Helium Atom Ionization: Dual Electron Energy?

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SUMMARY

The discussion centers on the ionization of the helium atom, specifically the possibility of simultaneously ionizing both electrons with a single photon. It is established that this has never been achieved, and while there may be unlikely mechanisms that could allow for such an event, direct dual ionization is not feasible. The ionization energy for helium remains a critical factor, although the exact implications of simultaneous ionization on energy levels are not definitively known.

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  • Understanding of quantum mechanics principles
  • Familiarity with photon interactions and ionization processes
  • Knowledge of helium atom structure and electron configuration
  • Basic grasp of energy levels and ionization energy concepts
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  • Research advanced quantum mechanics and dual electron ionization techniques
  • Explore experimental methods for measuring ionization energy in helium
  • Investigate the role of momentum transfer in electron interactions
  • Study the implications of simultaneous ionization on atomic energy levels
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Physicists, quantum mechanics researchers, and students studying atomic interactions and ionization processes will benefit from this discussion.

Mokdad
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Can we ionize the helium atom at once? ie the two electrons simultaneously and not one after another. If yes, what is the ionization energy in this case?
 
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By 'at once' you mean with a single photon? I'd say no. It's never been done, for sure.

I wouldn't say it's absolutely impossible; there's probably some extremely-unlikely mechanism by which it might be able to occur by transferring momentum back-and-forth. (e.g. single-electron ionization followed by that electron falling back to the atom (somehow) and scattering while ionizing the second electron. Something like that.) But not directly, no.
 
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I'd venture a guess saying that it is possible to ionize both electrons so close together that for all practical purposes you could say that it was at the same time. I don't believe the ionization energy would increase, but I can't say for sure.
 

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