High-resolution Larmor diffraction: theory and applications

by Ad van Well (TU Delft)

Thursday 18 Jan 2018, 10:00 → 12:00 Europe/Berlin

Glaspalast UYG02.22 Seminarraum Eingangsgebäude

A review is given of double and single arm Larmor diffraction. With the former a lattice-spacing resolution down to Dd/d = 10-6 can be obtained. The latter is a good high-resolution alternative if the sample or sample environment disturbs the magnetic field, e.g. ferromagnetic samples or applied magnetic fields. By choosing the tilt angle of the precession fields the optimum resolution can be set at a scattering angle at choice. The resolution for both single-crystal and polycrystalline samples is discussed in depth and is compared with conventional neutron-diffraction techniques.

Several experimental realisations with both double and single arm geometry will be presented.

A.A. van Well, M.T. Rekveldt, J. Phys: Conf. Series 862 (2017) 012029

Talk_Ad_van_Well.pdf