PUMA: Thermal three axes spectrometer

Abstract

Three axes spectrometers allow the direct measurement of the scattering function S(Q, ω) in single crystals at well defined points of the reciprocal lattice vector Q and frequency ω and thus represent the most general instrument type. PUMA, which is jointly operated by the Institute of Physical Chemistry, Georg-August-Universität Göttingen and the Technische Universität München, is characterised by a very high neutron flux as a result of the efficient use of focussing techniques.