Electron Refraction: Low Energy/Small Wavelength

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    Electron Refraction
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A beam of low energy and long wavelength electrons does experience refraction when transitioning between different media. While electron beams can scatter as they pass through materials, this scattering is not typically classified as refraction according to Snell's law, which applies to light. The term "ballistic electrons" is relevant in this context, as it describes electrons that travel through a medium without significant scattering. The discussion clarifies the terminology around electron behavior in various media. Understanding these concepts is crucial for studying electron dynamics in physics.
Karim Habashy
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Hi All,

Does a beam of "low energy/small wavelength" gets refracted when passing from one media to another.

Thanks
 
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I don't know what small wavelength means for electrons. The electron beam can be scattered from the material as they pass through. But we don't say it is refracted as Snell's law for light.
 
Yes, they do get refracted. Google for "ballistic electrons".
 
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I apologize, i meant (low energy/Long Wavelength), and thanks for the information.
 
I was using the Smith chart to determine the input impedance of a transmission line that has a reflection from the load. One can do this if one knows the characteristic impedance Zo, the degree of mismatch of the load ZL and the length of the transmission line in wavelengths. However, my question is: Consider the input impedance of a wave which appears back at the source after reflection from the load and has traveled for some fraction of a wavelength. The impedance of this wave as it...

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