Nuclear resonant scattering of synchrotron radiation from 161 Dy at 25.61 keV
2001; Institute of Physics; Volume: 56; Issue: 2 Linguagem: Inglês
10.1209/epl/i2001-00521-4
ISSN1286-4854
AutoresYuri Shvyd’ko, Martina Gerken, H. Franz, M. Lucht, E. Gerdau,
Tópico(s)X-ray Spectroscopy and Fluorescence Analysis
ResumoNuclear 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 ≃ 10–30 ns. NIS energy spectra of Dy2O3 at room temperature are measured with meV resolution. Scattering accompanied by phonon excitation is observed.
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