X-ray diffraction: (a) Determine the maximum wavelength for which Bragg reflection can be observed on a simple cubic crystal with a lattice constant of 3.6 Ả. (b) What is the energy of the X-rays in electron volts? (c) If you were to do neutron diffraction, what would the energy of the neutrons have to be in order to obtain the same de Broglie wavelength? (d) You could argue that if you take X-rays
X-ray diffraction: (a) Determine the maximum wavelength for which Bragg reflection can be observed on a simple cubic crystal with a lattice constant of 3.6 Ả. (b) What is the energy of the X-rays in electron volts? (c) If you were to do neutron diffraction, what would the energy of the neutrons have to be in order to obtain the same de Broglie wavelength? (d) You could argue that if you take X-rays
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Transcribed Image Text:X-ray diffraction: (a) Determine the maximum wavelength for which Bragg
reflection can be observed on a simple cubic crystal with a lattice constant of
3.6 À (b) What is the energy of the X-rays in electron volts? (c) If you were to do
neutron diffraction, what would the energy of the neutrons have to be in order to
obtain the same de Broglie wavelength? (d) You could argue that if you take X-rays
with twice the wavelength, you would still get a Bragg peak because the X-rays
would be diffracted from every other plane. Why is this argument not valid?
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