Problem:Pinhole collimation: Difference between revisions
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Latest revision as of 15:22, 20 September 2020
The collimation in a typical SANS instrument is performed by two pinholes separated by a distance. Consider a circular pinhole (made from an absorbing material), \(d=8\) mm, placed in the centre of a neutron beam and an identical circular pinhole a distance \(L=6\) m further down the beam. Calculate the maximal divergence in the \(x\) and \(y\) direction.