ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
High-resolution spectroscopies that use hard x rays like nuclear resonant scattering and inelastic x-ray scattering require monochromatization to the meV level. Currently, tunable x-ray monochromators using silicon allow one to achieve sub-meV energy bandwidths in the 10–30 keV energy range. Attempts to improve the energy resolution beyond 108 encounter issues such as stability, efficiency, and crystal-quality-limited resolution. Cryogenically cooling the silicon can potentially mitigate the problems related to thermal stability, as well as improve the efficiency. Cooling high-resolution monochromators, while maintaining the requisite 10 nrad angular control over the crystals, poses a challenging technical problem. Recent attempts to improve the limits of energy resolution and to improve efficiency and stability of high-resolution monochromators with cryogenic cooling will be discussed. © 2002 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1448153
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