Polarized epithermal neutron studies of magnetic domains

Journal Article · Sat Feb 01 04:00:00 EST 1997 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.52707· OSTI ID:664612

Alfimenkov, V P; Chernikov, A N; Lason, L; Mareev, Y D; Novitsky, V V; Pikelner, L B; Skoy, V R; Tsulaya, M I ^[1]; Gould, C R; Haase, D G ^[2]; Roberson, N R ^[3]

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1. Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation)
2. Physics Department, North Carolina State University, Raleigh, North Carolina (United States) 27695-8202
3. 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--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 392; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
ANGULAR DISTRIBUTION
CRYSTALS
DOMAIN STRUCTURE
EPITHERMAL NEUTRONS
EV RANGE 01-10
EV RANGE 10-100
HOLMIUM
NEUTRON RADIOGRAPHY
POLARIZED BEAMS