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What is the function of the collimator in the Davisson-Germer experiment?

Option: 1

To detect scattered electrons

 


Option: 2

To produce a beam of electrons


Option: 3

To accelerate electrons

 


Option: 4

To rotate the nickel crystal


Answers (1)

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The Davisson-Germer experiment and the Frank Hertz experiment. The Davisson-Germer experiment demonstrated the wave nature of electrons through electron diffraction, and verified the de Broglie equation. The experimental setup included an electron gun, collimator, target, and detector. The scattered electrons produced a diffraction pattern and the dual nature of matter was verified. The Frank Hertz experiment verified the existence of discrete energy states in atoms, and the graph of collected current vs accelerating voltage showed a characteristic 4.9 \mathrm{~V} peak due to the ionization of mercury atoms. The collimator in the Davisson-Germer experiment is used to produce a narrow and straight beam of electrons ready for acceleration.

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