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Polarized 3He analyzers for neutron reflectometry by W.C. Chen; C. Bailey; J.A. Borchers; R.F.C. Farrow; T.R. Gentile; D. Hussey; C.F. Majkrzak; K.V. O'Donovan; N. Remmes; W.M. Snow; A.K. Thompson is a Physics and Astronomy article available to read on EtoBox.

What is Polarized 3He analyzers for neutron reflectometry about?

At the National Institute of Standards and Technology (NIST) and Indiana University, we are developing polarized 3 He analyzers for neutron reflectometry. We have employed 3 He analyzers at two polarized neutron reflectometers, NG1 at the NIST Center for Neutron Research (NCNR) and POSY I at the Intense Pulsed Neutron Source (IPNS), Argonne National Laboratory. The long-term goal for both efforts is to perform efficient studies of magnetic diffuse scattering. At the NCNR, we tested a 3 He analyzer by comparing measurements of specular scattering obtained with a supermirror analyzer to those obtained with a 3 He analyzer. For this test, we measured the spin-flip and nonspin-flip scattering from a Mn 0:52 Pd 0:48 =Fe thin film. The results with the 3 He analyzer show very good agreement with those obtained with the supermirror analyzer. We have also carried out tests of the 3 He analyzer for application to magnetic diffuse scattering experiments. We discuss the development of a 3 He analyzer for IPNS that will be employed for studies of patterned magnetic arrays.

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Author

W.C. Chen; C. Bailey; J.A. Borchers; R.F.C. Farrow; T.R. Gentile; D. Hussey; C.F. Majkrzak; K.V. O'Donovan; N. Remmes; W.M. Snow; A.K. Thompson

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-4526)

Published

2003

Language

EN

Field

Physics and Astronomy (Physical Sciences)