Undergrad Double slit experiment with electrons

[Davephaelon]

When it's desired to detect an electron coming through one of the slits in the mask of the double slit experiment, how exactly is the detection done without blocking the electron from reaching the background screen? In another thread it's mentioned that a semiconductor detector is placed behind one of the slits, but that would presumably intercept the electron and prevent it from reaching the screen.

 

[DrChinese]

I can't find a good reference, but usually light shining on the electron path is used as an example.

With light & double slits, you can use polarizers as a way to mark which path. Here is a reference for that if you are interested. Compare figures 8 & 9.
http://sciencedemonstrations.fas.ha...-demonstrations/files/single_photon_paper.pdf

 

[BvU]

A passing electron generates a magnetic field pulse. That might be detectable with a Hall efffect sensor.

 

[Davephaelon]

Thanks DrChinese and BvU for the references and the suggested electron detection method. I'm currently reading the paper DrChinese provided a reference for.