What would be the outcome of conducting the following modified double slit experiment?
Take the normal double slit experiment with a detector on the double-slitted wall, and behind it, add a second wall with three slits in it.
Build the back wall such that a particle passing through one of the front wall slits is likely to continue through either of two of the three back wall slits.
An illustration with gun, detector, walls, and screen: https://sketch.io/mobile/?15344495732574540
______________ <-- Screen
____C_D_E____ <-- Wall with 3 slits (C, D, E)
_____A_B_____ <--- Wall with 2 slits (A, B) and detector
_______|_______ <-- Gun
From A, only C and D should be reachable, and from B, only D and E should be reachable.
The main factor of interest is use of the front wall (with detector) to eliminate one slit in the back wall.
Can you predict and describe the kind of pattern that will appear on the screen, and can you describe/explain the process a particle goes through during the experiment?
It can be with strictly one particle fired at a time, or it can be with an onslaught of fired particles. All fired particles are the same kind.
I don't care for a super precise answer.
Note: I don't know the answer. This is a genuine question I thought of today, not a school assignment (AFAIK, but I have not been taught QM, so what do I know.)