Polarized neutron imaging using helium-3 cells and a polychromatic beam

Polarized neutron imaging using helium-3 cells and a polychromatic beam

We present the use of helium-3 spin filters for polarized neutron imaging of magnetic phenomena. These polarization devices allow improvements in both spatial (factor of 2–3) and temporal (factor of ∼5) resolution compared with previously used solid-state benders. This set-up has been used to visual...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2011-09, Vol.651 (1), p.140-144
Hauptverfasser: Dawson, M., Kardjilov, N., Manke, I., Hilger, A., Jullien, D., Bordenave, F., Strobl, M., Jericha, E., Badurek, G., Banhart, J.
Format: Artikel
Sprache:eng
Schlagworte:
Accelerators
Beams (radiation)
Cylinders
Foils
Helium-3
Imaging
Neutron imaging
Neutron spin polarisers
Polarized neutrons
Saturation (magnetic)
Superconductivity
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We present the use of helium-3 spin filters for polarized neutron imaging of magnetic phenomena. These polarization devices allow improvements in both spatial (factor of 2–3) and temporal (factor of ∼5) resolution compared with previously used solid-state benders. This set-up has been used to visualize small-scale magnetic features in an Fe 65.7Co 18Si 0.8B 15.5 foil with a thickness of 21–22 μm and a saturation magnetization of 1.7 T, and trapped magnetic flux in a superconducting lead cylinder.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2011.02.013