Abstract

The principle of neutron spin echo (NSE) spectroscopy was discovered just 10 years ago — in April 1972 in Budapest — and the first fully fledged NSE spectrometer, IN11, has been in routine user operation since 1978 at the ILL in Grenoble. By now a whole variety of different types of applications have been successfully explored and well established. The resolutions achieved, such as 4 neV in quasielastic scattering and μ eV in phonon linewidth studies, represent more than an order of magnitude improvement with respect to other neutron scattering methods. In the present lecture the fundamental conceptual and practical aspects of NSE will be considered, together with a few representative experimental examples.

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