Scheme of set-up for observation of <a href="https://en.wikipedia.org/wiki/quantum_reflection" class="extiw" title="w:quantum reflection">quantum reflection</a> of atoms at <a href="https://en.wikipedia.org/wiki/grazing_incidence" class="extiw" title="w:grazing incidence">grazing incidence</a>
Hilmar Oberst
Attribution
private communication