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Suppose you want to observe neutron diffraction in a crystal with 0.26nm spacing

Physics
Tutor: None Selected Time limit: 0 Hours

Part A

Find the momentum of neutrons having wavelength equal to this spacing.
Part B
Find the kinetic energy of neutrons having wavelength equal to this spacing.
Apr 17th, 2015

A. p = h/0.26 nm = 6.63x10^-34 / 2.6x10-10 = 2.55x10^-24 kg * m/s

B. Ek = p^2/(2m) = 2.55^2 *10^(-48) /(2*1.675x10^(-27)) 

=1.94 x10^(-21) J 

Apr 17th, 2015

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