The Linear Phase Correction of MIEZE with Magnetic Wollaston Prisms

Abstract

I propose the use of two magnetic Wollaston prisms to correct the linear Larmor phase aberration of MIEZE, introduced by the transverse size of the sample. With this approach, the resolution function of MIEZE can be optimized for any scattering angle of interest. The optimum magnetic fields required for the magnetic Wollaston prisms depend only on the scattering angle and the frequency of the RF flippers and they are independent of the neutron wavelength and beam divergence, which makes it suitable for both pulsed and constant wavelength neutron sources.