Ultra-stable sub-meV monochromator for hard X-rays
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source.
A high-resolution silicon monochromator suitable for 21.541 keV synchrotron radiation is presented that produces a bandwidth of 0.27 meV. The operating energy corresponds to a nuclear transition in 151Eu. The first-of-its-kind, fully cryogenic design achieves an energy-alignment stability of 0.017 meV r.m.s. per day, or a 100-fold improvement over other meV-monochromators, and can tolerate higher X-ray power loads than room-temperature designs of comparable resolution. This offers the potential for significantly more accurate measurements of lattice excitation energies using nuclear resonant vibrational spectroscopy if combined with accurate energy calibration using, for example, high-speed Doppler shifting. The design of the monochromator along with its performance and impact on transmitted beam properties are presented.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source.
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC02-06CH11357; FC52-06NA27684
- OSTI ID:
- 1212710
- Journal Information:
- Journal of Synchrotron Radiation (Online), Vol. 22, Issue 5; ISSN 1600-5775
- Publisher:
- International Union of CrystallographyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Rocking curve imaging of high quality sapphire crystals in backscattering geometry
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text | January 2017 |
Rocking curve imaging of high quality sapphire crystals in backscattering geometry
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journal | January 2017 |
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