Scientific Review: Triple Axis Spectrometer at Serpong: Current Status

The interest in the utilization of a neutron beam as a probe for investigation of the dynamical behavior of condensed systems is justified by the fact that thermal neutrons coming out from a research reactor and thermal motions of the atoms in the matter have associated momentum and energies lying in the same ranges of values. Easily observable changes of the dynamical state of the neutron may then result from a scattering process. The measurement of the momentum and energy transferred by the neutron to the crystal, or vice versa, directly leads to the knowledge of the corresponding quantities associated with the elementary excitations of matter. Such knowledge, when analyzed in conjunction with the techniques of the Fourier transforms, may conduct to a detailed space-time description of the scatterer on a microscopic scale [1–5].