(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

In an experimental setup (shown in attachment) like this for neutron diffraction, how do I find the wavelength of the neutron. It should be around 2nm.

2. Relevant equations

[tex] \lambda = \frac{h}{mv}=\frac{396}{v} [/tex]

3. The attempt at a solution

I am having trouble with finding v of the neutron. Does it have to do with the total length of the tube?

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# Neutron diffraction

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