Abstract
The scattering of twisted Bessel neutrons from macroscopic and mesoscopic targets of ortho- and parahydrogen is studied theoretically. Superposition of twisted Bessel states is also examined. The angular distributions differ significantly from those for plane-wave neutrons with dependence on the twisted-neutron opening angle; a superposition of twisted Bessel states reveals an additional sensitivity to the orbital angular momentum projection. For mesoscopic targets, sensitivity to target location and the beam's orbital angular momentum depends on the relative sizes of target and beam parameters. These results suggest that scattering from molecular hydrogen may provide a means to characterize twisted-neutron beams.
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