The Linear Phase Correction of MIEZE with Magnetic Wollaston Prisms

TL;DR

This paper introduces a method using magnetic Wollaston prisms to correct phase aberrations in MIEZE spectroscopy, enhancing resolution across various scattering angles and source types.

Contribution

The paper presents a novel application of magnetic Wollaston prisms for linear phase correction in MIEZE, independent of neutron wavelength and beam divergence.

Findings

Resolution of MIEZE can be optimized for any scattering angle.

Magnetic fields depend only on scattering angle and RF frequency.

Applicable to both pulsed and constant wavelength neutron sources.

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.