The Davisson-Germer experiment demonstrated the wave-like nature of electrons by showing that they could be diffracted by a nickel crystal, and in so doing, provided important experimental support for de Broglie's theory of 'matter waves,' Bohr's theory of complementarity and Schrodinger's theory of wave mechanics.
Why is nickel used in Davisson-Germer experiment?
To remove the oxide layer they heating the nickel to a high temperature. During the heating process the poly-crystalline nickel turned into relatively large nickel crystals.
Which crystal is used in Davisson-Germer experiment?
Nickel crystal Target: The target is a Nickel crystal. The electron beam is fired normally on the Nickel crystal. The crystal is placed such that it can be rotated about a fixed axis. Detector: A detector is used to capture the scattered electrons from the Ni crystal.
What thing is verified by Davisson-Germer experiment?
The Davisson and Germer experiment demonstrated the wave nature of the electrons, confirming the earlier hypothesis of de Broglie. Electrons exhibit diffraction when they are scattered from crystals whose atoms are spaced appropriately.
Is electron gun used in Davisson-Germer experiment?
The Davisson and Germer experiment consisted of Nickel crystal (target), electron gun and a detector. The electron gun consisted of tungsten filament with high and low tension batteries. The low tension battery was used to heat the filament.
What is the contribution of Clinton Davisson and Lester Germer?
Then, in 1927, Davisson and Lester H. Germer found that a beam of electrons, when reflected from a metallic crystal, shows diffraction patterns similar to those of X rays and other electromagnetic waves.
What experiments did Louis de Broglie do?
In 1924 Louis de Broglie introduced the idea that particles, such as electrons, could be described not only as particles but also as waves. This was substantiated by the way streams of electrons were reflected against crystals and spread through thin metal foils.
What did Clinton Davisson and Lester Germer utilize during the conduct of their experiment?
Davisson and Germer designed and built a vacuum apparatus for the purpose of measuring the energies of electrons scattered from a metal surface. Electrons from a heated filament were accelerated by a voltage and allowed to strike the surface of nickel metal.
What are the ideas presented by Clinton Davisson and Lester Germer?
Then, in 1927, Davisson and Lester H. Germer found that a beam of electrons, when reflected from a metallic crystal, shows diffraction patterns similar to those of X rays and other electromagnetic waves.
What conclusions are obtained from the Davisson and Germer experiment?
Davisson-Germer experiment obtained the conclusion that electrons exhibit wave nature also , thus , supporting the hypothesis given by de-broglie regarding wave-particle duality of matter. This experiment involved bombardment of a nickel crystal in vaccum by accelerated electrons coming out of an electron gun.