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33.3 Electron Diffraction

The confirmation of de Broglie's hypothesis of matter- waves and hence that of wave particle duality for matter was provided by Davisson-Germer's experiment on electron diffraction.

Figure 2

The scattered electron beam was found to have maxima and minima of intensity depending on electron energy for discrete scattering angles instead of continuous variation of intensity with an angle. This could be explained only as the consequence of diffraction of matter- waves associated with electrons. The wave length of these waves were determined from observation from calculations using l = ; both values were found to be in excellent agreement with each other.


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33.1 Compton scattering of photons
33.2 Louis de Broglie's concept of matter waves
33.3 Electron Diffraction
33.4 Bohr's Atom

Chapter 34

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