Toellner T S, Hu M Y, Sturhahn W, Bortel G, Alp E E, Zhao J
Argonne National Laboratory, Argonne, IL 60439, USA.
J Synchrotron Radiat. 2001 Jul 1;8(4):1082-6. doi: 10.1107/s0909049501007257.
Monochromatization with crystal diffraction has been achieved to a resolution (lambda/delta lambda) beyond 10(8). The monchromator is specifically designed for 23.880 keV synchrotron radiation (lambda = 51.9 pm) for applications involving nuclear resonant scattering from 119Sn. 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 mu eV was measured, corresponding to a resolution of 1.7 x 10(8). Methods of improving efficiency, wavelength stability and resolution are discussed.
