73. In the face of the crystal of nickel falls parallel to the electron beam. The crystal is rotated so that the slip angle φ changes. When this angle is equal to 640, there is a maximum reflection electron diffraction peak corresponding to the first order. Taking the distance d between the atomic planes of the crystal to 200 pm, to determine the de Broglie wavelength λ of electrons and their speed υ.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
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