Question

Instead of an free electron if photon strikes with an bound electron then which radiation are obtained ​

Answer 1

Answer:

If the photon of the wavelength 150 pm strikes an atom and one of its inner bound electrons is ejected out with a velocity of 1.5×10

7

ms

−1

, calculate the energy with which it is bound to the nucleus.

Hard

Answer 2

Answer:

As far as we know, the electron has no substructure...

We say it can't happen because it violates simultaneous energy and momentum conservation.

Here's one (arguably unsatisfying) reason why:

This is a plot of the free electron and photon dispersion relations in free space, or how their energies look like at any given momentum. (The rules are set: if the particle has an energy, it has a specific momentum, and vice versa). Note that, because of the way the electrons dispersion relation is curvy shaped, there's just no way to take a given photon line and successfully slap it on the electrons curve. It always comes up short.

Explanation: