Towards polarizing beam splitters for cold neutrons using superparamagnetic diffraction gratings

Details Towards polarizing beam splitters for cold neutrons using superparamagnetic diffraction gratings Towards polarizing beam splitters for cold neutrons using superparamagnetic diffraction gratings

2012-01-31

arxiv.org/abs/1201.6519v1

Physics

Instrumentation and Detectors

Proceedings paper for the 5th European Conference on Neutron Scattering, July 2011, Prague, Czech Republic

Scientific paper

For holographic gratings recorded in superparamagnetic nanoparticle-polymer composites the diffraction efficiency should -- next to grating spacing, nanoparticle concentration and grating thickness -- depend on the strength of an external magnetic field and the incident neutron spin state. As a consequence, diffraction gratings should be tunable to act as mirrors for one spin state, while being essentially transparent for the other. Thus, polarizing beam splitters for cold neutrons become feasible.

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