Photoelectric Effect: Insufficient Energy Collision

[Manula]

what happens if a photon with insufficient energy to overcome the work function collide with a electron.

 

[sciboudy]

what happens if a photon with insufficient energy to overcome the work function collide with a electron.

I think elastic collision take place photon will hits the electron without remove it from it's orbit
and photon will cause scattering

 

[ZapperZ]

what happens if a photon with insufficient energy to overcome the work function collide with a electron.

The excited electron decays back below the Fermi energy (it recombines with a hole that was created when it got excited). The energy then is transferred to the lattice vibrations of the material, and is lost as heat.

Zz.

 

[sciboudy]

The excited electron decays back below the Fermi energy (it recombines with a hole that was created when it got excited). The energy then is transferred to the lattice vibrations of the material, and is lost as heat.

Zz.

what about my answer Dr Zz it's wrong ?

 

[ZapperZ]

what about my answer Dr Zz it's wrong ?

Yes, and you really shouldn't be offering an answer if you are not sure (re-read the PF Rules that you had agreed to).

Photoelectric effect often takes place in METALS, and metals are solids. It means that most of its behavior are due to a COLLECTIVE phenomena, not due to individual atoms. The electrons that are involved in a standard photoelectric effect comes from the CONDUCTION BAND, not from individual atoms. So to invoke "orbits" is incorrect in this case.

Zz.

 

[sciboudy]

okay sorry