Crystal monochromator with a resolution beyond 10(8).
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.
Toellner
T S
TS
Argonne National Laboratory, Argonne, IL 60439, USA. toellner@aps.anl.gov
Hu
M Y
MY
Sturhahn
W
W
Bortel
G
G
Alp
E E
EE
Zhao
J
J