In an electron-scattering experiment, an intense reflected beam is found at ϕ = 32° for a crystal with an interatomic distance of 0.23 nm. What is the lattice spacing of the planes responsible for the scattering? Assuming fi rst-order diffraction, what are the wavelength, momentum, kinetic energy, and total energy of the incident electrons?

In an electron-scattering experiment, an intense reflected beam is found at ϕ = 32° for a crystal with an interatomic distance of 0.23 nm. What is the lattice spacing of the planes responsible for the scattering? Assuming fi rst-order diffraction, what are the wavelength, momentum, kinetic energy, and total energy of the incident electrons?

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