Polarized epithermal neutron studies of magnetic domains
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation)
- Physics Department, North Carolina State University, Raleigh, North Carolina (United States) 27695-8202
- Physics Department, Duke University, Durham, North Carolina (United States) 27708-0305
The average size and shape of magnetic domains in a material can be determined from the precession of polarized neutrons traversing the material. Epithermal neutrons (0.5eV{lt}E{sub n}{lt}100eV), which precess more slowly than thermals, effectively probe the internal structure of samples that are thick or have large domains or large internal fields. Such epithermal neutron measurements require a neutron polarizer and analyzer based on cryogenically polarized spin filters. We discuss the measurement at JINR, Dubna, of magnetic domains in a 2.0 cm. diam. crystal of holmium using 1.7 to 59 eV neutrons polarized by a dynamically polarized proton target and analyzed with a statically polarized dysprosium target. {copyright} {ital 1997 American Institute of Physics.}
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76ER01067; FG02-88ER40441
- OSTI ID:
- 664612
- Report Number(s):
- CONF-961110-; ISSN 0094-243X; TRN: 98:010857
- Journal Information:
- AIP Conference Proceedings, Vol. 392, Issue 1; Conference: 14. international conference on the application of accelerators in research and industry, Denton, TX (United States), 6-9 Nov 1996; Other Information: PBD: Feb 1997
- Country of Publication:
- United States
- Language:
- English
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