Have electrons been used to image electrons or ions?

[Philip Koeck]

I'm looking for images of electron or ion beams recorded (from the side) using electrons, for example with a transmission electron microscope. Does anybody have references to publications?

 

[.Scott]

I'm not sure what the point would be of such a measurement.
When I think of imaging with electrons, I think of electron microscopes - of which there are half a dozen basic types.
https://en.wikipedia.org/wiki/Electron_microscope

But in all cases, the object being scanned is held still in order to get a very high resolution image.

You can Google on: electron ion collision cross section
But most of those articles are either behind paywalls or focus on electron capture instead of deflection.

 

[Philip Koeck]

I'm not sure what the point would be of such a measurement.
When I think of imaging with electrons, I think of electron microscopes - of which there are half a dozen basic types.
https://en.wikipedia.org/wiki/Electron_microscope

But in all cases, the object being scanned is held still in order to get a very high resolution image.

One thing I want to know is how stable the electron or ion beam is while it's exposed to let's say 200 keV electrons.

 

[mfb]

You have effects of beam-beam interactions in colliders.

 

[Philip Koeck]

You have effects of beam-beam interactions in colliders.

I'm thinking more along these lines: An electron or ion beam produces an electrostatic potential. In phase contrast electron microscopy and electron holography you can get images that are roughly proportional to the projected potential of the specimen. I'm wondering if anybody has imaged the potential produced by a charged particle beam using phase contrast electron microscopy or electron holography.

 

[hutchphd]

Would there not be significant and unwanted phase shifts from the Bohm-Aharanov effect?

 

[Philip Koeck]

Not sure. I was told by Marco Beleggia that the magnetic field from a current orthogonal to the electron beam of the microscope will not lead to a phase shift of the electron beam. He's worked a lot on phase shifts due to magnetic fields, such as for an electron microscope phase plate, but I really don't know.
Here's Marco's paper:
https://www.researchgate.net/publication/313434493_Tunable_Ampere_phase_plate_for_low_dose_imaging_of_biomolecular_complexes

 

[hutchphd]

The devil is in the geometric detail and I am not expert in electron microscopy, so I certainly don't know! Just one more thing to consider..