Polarized Epithermal Neutron Studies of Magnetic Domains

Journal Article · Thu Apr 10 04:00:00 EDT 1997 · Application of Accelerators in Research and Industry

DOI:https://doi.org/10.1063/1.52707· OSTI ID:774290

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

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1. Triangle Universities Nulcear Laboratory

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<En<100eV), which process 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 measurements at JINR, Dubna, of magnetic domains in a 2.0 cm. diam. crystal of holmium using 1.7 to 59eV neutrons polarized by a dynamically polarized proton target and analyzed with a statically polarized dysprosium target.

• Research Organization: Triangle Universities Nuclear Laboratory (TUNL) and (NCSU)
• Sponsoring Organization: USDOE Office of Energy Research (ER)
• DOE Contract Number: FG02-97ER41042
• OSTI ID: 774290
• Report Number(s): ER41042
• Journal Information: Application of Accelerators in Research and Industry, Journal Name: Application of Accelerators in Research and Industry Vol. CP392
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DUBNA
DYSPROSIUM
EPITHERMAL NEUTRONS
HOLMIUM
NEUTRONS
PRECESSION
PROBES
PROTONS
SHAPE
SPIN
TARGETS