Opening the terahertz window on the OSIRIS spectrometer
1 SIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, UK
2 Instituto de Estructura de la Materia IEM-CSIC, Consejo Superior de Investigaciones Científicas, Serrano 123, Madrid 28006, Spain
3 Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK
Published online: 23 January 2015
A cooled and mechanically retractable beryllium filter has been installed and commissioned on the low-energy OSIRIS spectrometer at ISIS. This instrument development extends the energy-transfer range of the spectrometer up to ca. 20 meV (∼ 5 THz), leading to an excellent resolution at THz frequencies and substantial gains in detected flux relative to existing capabilities on the neighbouring IRIS spectrometer. Herein, we provide a concise account of this new capability for high-resolution neutron spectroscopy in the THz domain, as well as outline a number of ongoing and potential scientific opportunities in condensed-matter physics, chemistry, and materials science.
© Owned by the authors, published by EDP Sciences, 2015
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