What happens to energy levels when electrons collide with an atom?

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Homework Help Overview

The discussion revolves around the interaction between a colliding electron and an atom's electron, specifically focusing on energy levels and potential outcomes following the collision. The subject area includes concepts from quantum mechanics and atomic physics.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants explore the implications of a collision between a high-energy electron and an atom's ground state electron, questioning how energy is transferred and what happens to the atom's electron post-collision. There are inquiries about the stability of energy states and the potential for ionization.

Discussion Status

Some participants are considering the possibility of ionization and the conversion of energy into kinetic energy for the free electron. Others are questioning the phrasing of the original problem and the implications of the term "subsequently," indicating a lack of consensus on the interpretation of the outcomes.

Contextual Notes

There is mention of specific energy values and the distinction between ground state and higher energy levels, which may influence the understanding of the problem. Participants are also reflecting on the nature of energy absorption and emission in the context of atomic transitions.

Millan
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Hi:

a) an atoms electron is in the ground state (4.11*10^ -17). An electron with ke 5*10^-17 collides with the atom, what happens to the energy.

b) What could subsequently happen to the electrons in the higher energy levels

help please
 
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You mean the atom's electron is in the ground state, with E = - 4.11E-17 J
Stable situations usually have negative Total Energy ...

What happens if the stray electron collides with the atom's electron?
How much Energy would that "ground state" electron have then?
How far from the atom would it get before it runs out of KE?
 
Yes energy = - 4.11E-17 J

my mistake lol

I think the answer is that the atom gets ionised and the remaining enegry becomes the KE of the free electron.

but I am confused as to the words 'what happens to the ENERGY' (is it just absorbed by the electron in the ground state and the rest goes to KE)

and part b) i think it is the electrons drop down energy levels emmiting light - photons with discrete frequencies hence discrete wavelengths.

but the questions says 'subsequently' , so I am not sure if its right or is its just there to put you off.
 
Last edited:

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