Nuclear resonant scattering of synchrotron radiation
Nuclear resonant scattering of synchrotron radiation
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同步加速器辐射的核共振散射
DOI：
10.1023/a:1017073002352
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发表时间：
1999
影响因子：
--
通讯作者：
H. Dewaard
中科院分区：
文献类型：
--
作者：
E. Gerdau;H. Dewaard
用核前向散射和核非相干散射两种方法研究了161 Dy 25.6keV同步辐射的核共振散射。在15 ~ 80 K温度范围内测量了Dy金属的NFS时间谱。它们揭示了铁磁镝中的电子自旋弛豫，弛豫时间为10-30 ns。测量了Dy_2 O_3的室温NIS能谱，其分辨率为meV。散射伴随着声子激发观察。
Nuclear resonant scattering of synchrotron radiation from the 25.6 keV level of 161 Dy 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.