Open AccessCrystal monochromator with a resolution beyond 10 8
Author(s) -
Toellner T. S.,
Hu M. Y.,
Sturhahn W.,
Bortel G.,
Alp E. E.,
Zhao J.
Publication year - 2001
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049501007257
Subject(s) - monochromator , lambda , resolution (logic) , synchrotron radiation , wavelength , crystal (programming language) , optics , monocrystalline silicon , diffraction , physics , scattering , crystal structure , silicon , materials science , crystallography , atomic physics , optoelectronics , chemistry , artificial intelligence , computer science , programming language
Monochromatization with crystal diffraction has been achieved to a resolution (λ/Δλ) beyond 10 8 . The monchromator is specifically designed for 23.880 keV synchrotron radiation (λ = 51.9 pm) for applications involving nuclear resonant scattering from 119 Sn. The design uses asymmetrically cut silicon (12 12 12) crystal reflections from two single‐crystalline monoliths oriented in a dispersive geometry. A transmitted energy bandwidth of 140 ± 20 µeV was measured, corresponding to a resolution of 1.7 × 10 8 . Methods of improving efficiency, wavelength stability and resolution are discussed.