Premium
Resonance Scattering of Hard Synchrotron Radiation and Neutrons by Nuclei in Crystals
Author(s) -
Haas M. A.,
Hizhnyakov V. V.
Publication year - 1980
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221020110
Subject(s) - omega , physics , scattering , neutron , recoil , nuclear physics , synchrotron radiation , relaxation (psychology) , atomic physics , spectral line , optics , quantum mechanics , psychology , social psychology
A resonant scattering of hard synchrotron radiation and neutrons by nuclei in a crystal is considered at a recoil energy of R≫ ℏ \documentclass{article}\pagestyle{empty}\begin{document}$ \mathop \omega \limits^ \sim $\end{document} and the lifetime of the compound nucleus τ 0 ≈ 2π/ \documentclass{article}\pagestyle{empty}\begin{document}$ \mathop \omega \limits^ \sim $\end{document} , with \documentclass{article}\pagestyle{empty}\begin{document}$ \mathop \omega \limits^ \sim $\end{document} being the characteristic phonon frequency. In these cases the main contribution to the scattering is made by the secondary particles emitted in the relaxation process of the recoil energy of the compound nucleus. This emission is called hot nuclear fluorescence (hot emission of neutrons). Numerical calculations are performed to show the strong dependence of this type of resonant scattering spectra on the parameters R/ℏ \documentclass{article}\pagestyle{empty}\begin{document}$ \mathop \omega \limits^ \sim $\end{document} , \documentclass{article}\pagestyle{empty}\begin{document}$ \mathop \omega \limits^ \sim $\end{document} τ 0 , and local lattice dynamics. The requirements for the corresponding experiments, following from this study are considered. A possible set‐up for an experiment is proposed which allows to study the hot nuclear fluorescence without spectrometer.