Register to reply

Low energy photon - electron collision

by Question Man
Tags: collision, electron, energy, photon
Share this thread:
Question Man
#1
Jul21-11, 05:53 PM
P: 9
Suppose a photon collides with an electron, but does not have enough energy to dislodge the electron or knock the electron into it's next energy level. What happens? Is the effect observed?
Phys.Org News Partner Physics news on Phys.org
Mapping the optimal route between two quantum states
Spin-based electronics: New material successfully tested
Verifying the future of quantum computing
CJames
#2
Jul22-11, 01:39 AM
CJames's Avatar
P: 355
Nothing happens. The probability that an electron exists between energy levels is zero, so the probability that it will absorb that level of energy is zero.
Dickfore
#3
Jul22-11, 02:01 AM
P: 3,014
The photon will scatter off from its initial direction, transferring a little momentum and kinetic energy to the atom as a whole and losing a little bit of energy, thus becoming redshifted. It is like the Compton scattering, only that instead of the mass of a free electron, you should use the mass of the atom.

Waterfox
#4
Jul22-11, 03:38 AM
P: 33
Low energy photon - electron collision

I believe this is what happens in transparent objects


Register to reply

Related Discussions
High energy free electron and low energy photon collision General Physics 4
Photon and Electron Collision Introductory Physics Homework 1
Photon/Electron collision Introductory Physics Homework 1
Photon-Electron Collision Introductory Physics Homework 1
Photon-Electron Collision Quantum Physics 1