Solution to Schroedinger Equation for a huge hypothetical

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Discussion Overview

The discussion revolves around the solution to the Schrödinger equation (SE) for a hypothetical atom with an extremely high atomic number (Z), specifically Z=1,000,000, and the implications of such a scenario at large quantum numbers (n) and distances from the nucleus. The focus includes theoretical considerations of electron binding energies and the stability of the nucleus.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions the nature of the solution to the SE for a two-body problem involving a nucleus with Z=1,000,000 and an electron at large distances.
  • Another participant suggests that the basic prediction is that the nucleus would break apart quickly, and that electron binding energies would be very small.
  • A clarification is made regarding the desire for a solution at high quantum numbers (n=1000 or higher) and the assumption of a stable nucleus with atomic weight 2,000,000.
  • It is noted that the two-body problem can be modeled similarly to the hydrogen atom with a specific potential, but the realism of such a model is questioned.
  • One participant proposes evaluating the expected momentum of the electron in the ground state to explore the feasibility of the hypothetical system.
  • Another participant highlights that the concept of distance from the nucleus may be more complex than initially presented, suggesting that such exercises can reveal important nuances.

Areas of Agreement / Disagreement

Participants express differing views on the feasibility and implications of the hypothetical atom, with no consensus reached on the existence or stability of such a system.

Contextual Notes

Limitations include the complexity of finding exact solutions to the SE for multi-particle systems and the assumptions regarding the stability of the nucleus and the nature of electron binding at large distances.

Sven Andersson
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Solution to Schroedinger Equation for a huge hypothetical atom?

Let's say you have hypothetical atomic nucleus with a very large Z, say a million times of the most highly charged ones; what would be the solution to the SE at very large n's i.e. at very large distances, say several centimeters, from the hypothetical nucleus?

S.A.
 
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Welcome to PF;
... short answer: complicated.
Depends what you want to find out... the basic prediction is that the nucleus will break apart in a very short time, and that the electron binding energies would be, in any case, very small.

Note: It is very difficult to find exact solutions to the Schrödinger equation for systems of more than one or two particles.
 
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Clarification; I meant a solution to SE for a two body problem; one electron and one nucleus with Z=1 000 000. Let's assume that the nucleus is stable and has atomic weight 2 000 000. And the solution I want is for n=1000 or higher (at a distance of several centimeters). What values do you plug in? What does the equation look like?
 
So you're looking for the solution for an electron bound in the field of a fixed point charge... That two body problem is just the hydrogen atom with potential ##U(r)=\frac{-Ze}{4\pi\epsilon_0{r}}##

Google for "hydrogen atom Schrödinger" will find it.
It won't be even slightly realistic for many reasons, but that's a different problem.
 
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Sven Andersson said:
I meant a solution to SE for a two body problem; one electron and one nucleus with Z=1 000 000. Let's assume that the nucleus is stable and has atomic weight 2 000 000.
I suggest once you find the eigenfunctions to this problem, you do a quick evaluation of the expected value for the momentum of an electron in the ground state. Then divide by electron mass to get the average speed of the electron. Then come back and tell me why such a system can't exist (or is overlooking something fundamental).
 
What they said... also, the distance from the nucleus is a trickier concept than how you appear to be thinking.
Such conceptual exercizes can be good for uncovering these nuances.
 

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