In the davisson germer experiment, davisson and germer shot a beam of electrons at a lattice of nickel atoms and found that the electrons were only detected at certain angles. The basic experimental arrangement is shown below along with the nickel crystal structure. This experiment gave establishment of quantum mechanics and. Balmer found equation for hydrogen spectrum but didnt know what it. Made a good guess about the nobel prize for 20 announcements. Matterelectron waves and the davissongermer experiment. Davisson germer lecture electron interference wave.
Davisson, who worked in the bell research laboratories, received the nobel prize in physics for the year 1937 together with george p. Homework statement in the experiment of davisson and germer a show that the second and thirdorderdiffracted beams cannot occur and b find the angle at which the firstorder diffracted beamwould occur if the accelerating potential were changed from 54 to 60 v. This experiment involved bombardment of a nickel crystal in vaccum by accelerated electrons coming out of. This file is licensed under the creative commons attributionshare alike 3. The davissongermer experiment 1927 was the first measurement of the wavelengths of electrons. Homework statement this is a conceptual question that i am not quite sure about. The davissongermer experiment is considered an unequivocal demonstration of the wave nature of matter and a fundamental demonstration of the viability of the theory of quantum mechanics. The davissongermer experiment was a 192327 experiment by clinton davisson and lester germer at western electric later bell labs, in which electrons, scattered by the surface of a crystal of nickel metal, displayed a diffraction pattern.
The davissongermer experiment itself is an established experiment. Davissongermer experiment 6 pts cornell university. Description simulate the original experiment that proved that electrons can behave as waves. Thomson from the university of aberdeen in scotland, who independently also found experimental indications of electron diffraction. You may do so in any reasonable manner, but not in. The davisson germer experiment provided crucial empirical evidence for the validity of the then rapidly. In 1925, davisson and germer were studying electron scattering from. Watch electrons diffract off a crystal of atoms, interfering with themselves to create peaks and troughs of probability. In the davissongermer experiment details here, do the electron diffraction peaks that occur only show up if the incident beam of electrons hits the crystal surface perpendicularly. One can see the description of the experiments and its physical. At this site, the original location of bell telephone laboratories, d. February 15, 2002 davissongermer experiment this is the first experiment which confirmed the wave nature of electrons. Davisson germer experiment homework set 5 is today. Franckhertz experiment 6 pts davissongermer experiment 6 pts figure 3.
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