High-resolution monochromator for the 8.41 keV 169Tm nuclear resonance

Velten, S.; Prajapat, D.; Dill, F.-U.; Sergeev, I.

doi:10.1107/S1600577526009112

Figure 4
Nuclear forward and nuclear inelastic scattering results. (a) Time-dependent nuclear forward decay following X-ray excitation and (b) PDOS from a thinly spread Tm₂O₃ powder (∼4 µm). (c) Nuclear forward decay and (d) PDOS from a 45° inclined 10 µm Tm metal foil. The decay patterns were recorded 10 ns after X-ray excitation. The fit (red lines) allows one to extract the hyperfine parameters. The insets in (b) and (d) show the PDOS divided by the square of the energy, allowing the Debye level to be derived (red line). The gray shaded region is neglected in the calculation due to potential artefacts from the elastic line removal. The Debye-like behavior was assumed to be up to 9 meV for Tm₂O₃ and 5 meV for Tm metal.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 33| Part 6| November 2026|

https://doi.org/10.1107/S1600577526009112

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