Abstract
The use of a pulsed neutron source is convenient for spin-echo techniques not only because of the gain in neutron economy (Nuc. Inst. and Meth. 164 (1979) 153), but also because the number of parameters varied during a scan is reduced. The recently proposed modulated-intensity small angle neutron scattering (MISANS) instrument uses the MIEZE technique, a variant of the neutron resonance spin-echo (NRSE). The adaptation of this method to a small angle neutron scattering (SANS) spectrometer provides the possibility to study slow dynamics with energy changes in the neV-range. The advantage of MIEZE compared to other spin-echo techniques is that all polarizing neutron optics can be installed upstream of the sample, so that the signal is indifferent to depolarization at the sample position and an area detector can be operated very easily. This paper discusses the changes to the SASI spectrometer at the IPNS in Argonne required to insert the MIEZE components on the existing beamline. Published by Elsevier B.V.
| Original language | English |
|---|---|
| Pages (from-to) | 213-217 |
| Number of pages | 5 |
| Journal | Physica B: Physics of Condensed Matter |
| Volume | 356 |
| Issue number | 1-4 SPEC. ISS. |
| DOIs | |
| State | Published - Feb 15 2005 |
| Externally published | Yes |
Funding
The authors are indebted to Prof. P. Böni (FRM2) for supporting the project with a test polarizer and useful discussions, Dr. J. Carpenter and Dr. S. Klimko for helpful discussions. The support of the management and the staff of the IPNS at Argonne National Laboratory is gratefully acknowledged. This work is funded by the US Department of Energy, BES-Materials Science, under Contract W-31-109-ENG-38.
Keywords
- Neutron spin echo
- Pulsed neutron source
- Small angle neutron scattering