Backscattering of photons in dim = 1

[Heidi]

TL;DR

what is the probability thar a photon emitted to the right on an axis interacts with an electron and then comes back to the left?

Hi PF
i am reading a book written by L Tarassov about the Young slits experiment
there is a source of photons in the middle behind the slits. when the electron passes thru one slit the photon is detected by a camera near this slit or another near the other slit.
there is a probablité thar the photon emitted by the source interact with the electron and hit the camera near it but it can also hit it and goback in the other direction.
I am looking for the formulas giving these probabilities (they depend on the frequency of the photon).
thanks.

 

[bobob]

I'm not sure I understand the question. It sounds like compton scattering, but that doesn't give you probabilities and it doesn't only give you forward and backward as a result.

 

[Heidi]

I'm not sure I understand the question. It sounds like compton scattering, but that doesn't give you probabilities and it doesn't only give you forward and backward as a result.

As we have dim =1 after scattering the photon can go to the left or to the right (two probabilities).

 

[Heidi]

I explain the reason of my question. I am reading a book in which the author
is talking about which path information.
We have two slits (or two holes) situated a +1 and -1 on the x axis. An electron can pass thru these holes. At x = 0 we have source of photons that will interact with the electron passing in 1 or -1 (compton effect). these photon will be detected at -2 or +2 later.
the author consider the amplitude phi1 and phi2 associated to its measurement at -2 or 2.
it is why i am looking for the value of phi1 and phi2 depending on its energy.