Nuclear resonant scattering of synchrotron radiation from at
Institut für Experimentalphysik, Universität
Hamburg - Hamburg D-22761, Germany
2 HASYLAB, DESY - Notkestrasse 85, D-22603 Hamburg, Germany
Accepted: 24 July 2001
Nuclear resonant scattering of synchrotron radiation from the 25.6 keV level of 161Dy is studied with two techniques: nuclear forward scattering (NFS) and nuclear incoherent scattering (NIS). NFS time spectra of Dy metal are measured at temperatures ranging from 15 K to 80 K. They reveal electron spin relaxation in ferromagnetic dysprosium with long relaxation times of ns. NIS energy spectra of Dy2O3 at room temperature are measured with meV resolution. Scattering accompanied by phonon excitation is observed.
PACS: 76.80.+y – Mössbauer effect; other γ-ray spectroscopy / 72.25.Rb – Spin relaxation and scattering / 63.20.-e – Phonons in crystal lattices
© EDP Sciences, 2001