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Research Article

A Very Cold Neutron Reflectometer for MIRA at the FRM-II^†

Robert Georgii,* Peter Böni, and Nikolai K. Pleshanov

FRM-II, Technische Universitt Mnchen, Lichtenbergstrasse 1, 85747 Garching, Germany, E21, Technische Universitt Mnchen, James-Franckstrasse, 85747 Garching, Germany, and Petersburg Nuclear Physics Institute, 188300 Gatchina, St. Petersburg, Russia

Langmuir, 2003, 19 (19), pp 7794–7795

DOI: 10.1021/la0267387

Publication Date (Web): March 5, 2003

†

Part of the Langmuir special issue dedicated to neutron reflectometry.

To whom correspondence should be addressed. Phone: +49-89-289-14986. Fax: +49-89-289-14995. E-mail: rgeorgii@ frm2.tum.de.

Abstract

MIRA is a beam line for very cold neutrons (7.7 Å < λ < 30 Å) at the new FRM-II reactor. It can be operated as a classical reflectometer, working in the θ−2θ scan mode and a horizontal reflection geometry with q-transfers of 7.0 × 10^-⁴ Å^-¹ < q < 1.1 Å^-¹. A flux of 2.0 × 10⁶ neutrons /(cm² s) at the sample is aimed for. We also plan to use a multilayer polarizer and an analyzer to perform polarized neutron reflectometry. Furthermore, the instrument will be used for the development of new techniques.