Focusing neutrons with a combination of parabolic and elliptical supermirrors

Désert, S.; Panzner, T.; Permingeat, P.

doi:10.1107/S0021889812047346

Figure 9
Principle of the test device converted to a lens setup where the lenses are represented by arrows. The first lens P models the parabolic mirror and the second lens E models the elliptical mirror.