Similar to electron diffraction, neutron diffraction microscope is also used for the determination of the structure of molecules. If the wavelength used here is 800 pm, calculate the characteristic velocity associated with the neutron.
Similar to electron diffraction, neutron diffraction microscope is also used for the determination of the structure of molecules. If the wavelength used here is 800 pm, calculate the characteristic velocity associated with the neutron.
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1 Answer
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λ = 800 pm = 800 x 10-12 m
m = 1.675 x 10-27 kg
As per de Brogile’s equation,
ν =h/mλ = (6.626 x 10-34 kg m2 s-1) / (1.675 x 10-27 kg) x (800 x 10-12 m)
=6.626/1.675 * 8 x 10-34+27+10
= 0.494 x 103 ms-1
= 494 ms-1
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