Abstract
This study proposes the use of two magnetic Wollaston prisms (MWPs) to correct for the linear Larmor phase aberration of modulation of intensity emerging from zero effort (MIEZE), introduced by the transverse size of the sample. With this approach, the contrast of the intensity modulation can be maximized at any scattering angle of interest such that the same contrast as the direct transmission geometry can be fully recovered. The optimum magnetic fields required for the MWPs depend only on the scattering angle and the frequencies of the radio-frequency flippers, and they are independent of the neutron wavelength and beam divergence, which makes the approach suitable for both pulsed and continuous neutron sources.
| Original language | English |
|---|---|
| Pages (from-to) | 90-97 |
| Number of pages | 8 |
| Journal | Journal of Applied Crystallography |
| Volume | 55 |
| DOIs | |
| State | Published - Feb 1 2022 |
Funding
This work was sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the US Department of Energy. This material is based upon work supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under contract No. DE-AC05-00OR22725.
Keywords
- Linear phase correction
- MIEZE
- Magnetic Wollaston prisms
- Modulation of intensity emerging from zero effort
- Neutron spin echo