- #1
Manula
- 28
- 0
what happens if a photon with insufficient energy to overcome the work function collide with a electron.
Photoelectric Effect: Insufficient Energy Collision
In summary, when a photon with insufficient energy to overcome the work function collides with an electron, an elastic collision takes place where the photon hits the electron without removing it from its orbit. The energy from the photon is then transferred to the lattice vibrations of the material, resulting in heat. It is important to note that the photoelectric effect often takes place in metals, where the behavior is due to collective phenomena rather than individual atoms.
- #2
sciboudy
- 89
- 0
Manula said:
I think elastic collision take place photon will hits the electron without remove it from it's orbit
and photon will cause scattering
- #3
- 32,820
- 4,719
Manula said:
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.
- #4
sciboudy
- 89
- 0
ZapperZ said:
what about my answer Dr Zz it's wrong ?
- #5
- 32,820
- 4,719
sciboudy said:
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.
- #6
sciboudy
- 89
- 0
okay sorry
FAQ: Photoelectric Effect: Insufficient Energy Collision
1. What is the photoelectric effect?
The photoelectric effect is the phenomenon where electrons are emitted from a material when it is exposed to electromagnetic radiation, such as light.
2. How does the photoelectric effect relate to insufficient energy collisions?
In the photoelectric effect, electrons are emitted from a material when they absorb enough energy from the incoming photons. If the photons do not have enough energy, the electrons will not be emitted, resulting in an insufficient energy collision.
3. What is the threshold frequency in the photoelectric effect?
The threshold frequency is the minimum frequency of light required to cause the emission of electrons in the photoelectric effect. Below this frequency, the electrons will not be emitted regardless of the intensity of the light.
4. What is the work function in the photoelectric effect?
The work function is the minimum amount of energy required to remove an electron from the surface of a material. It is different for each material and determines the threshold frequency for the photoelectric effect.
5. How does the photoelectric effect support the particle nature of light?
The photoelectric effect demonstrates that light behaves like a particle, as the energy of the photons is directly related to the emission of electrons. This supports the idea that light has both wave-like and particle-like properties, known as wave-particle duality.