期刊
JOURNAL OF SYNCHROTRON RADIATION
卷 19, 期 -, 页码 245-251出版社
WILEY-BLACKWELL
DOI: 10.1107/S0909049511056081
关键词
X-ray emission spectrometer; resonant X-ray emission spectroscopy; high-energy resolution fluorescence detection; volume collapse
资金
- US Department of Energy, Basic Energy Sciences [DE-SC0002194]
- CIW
- CDAC
- UNLV
- LLNL
- DO E-NNSA
- DOE-BES [DE-AC02-06CH11357]
- NSFUS Department of Energy by Lawrence Livermore National Laboratory [DEAC52-07NA27344]
- U.S. Department of Energy (DOE) [DE-SC0002194] Funding Source: U.S. Department of Energy (DOE)
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1126249] Funding Source: National Science Foundation
Core-shell X-ray emission spectroscopy (XES) is a valuable complement to X-ray absorption spectroscopy (XAS) techniques. However, XES in the hard X-ray regime is much less frequently employed than XAS, often as a consequence of the relative scarcity of XES instrumentation having energy resolutions comparable with the relevant core-hole lifetimes. To address this, a family of inexpensive and easily operated short-working-distance X-ray emission spectrometers has been developed. The use of computer-aided design and rapid prototype machining of plastics allows customization for various emission lines having energies from similar to 3 keV to similar to 10 keV. The specific instrument described here, based on a coarsely diced approximant of the Johansson optic, is intended to study volume collapse in Pr metal and compounds by observing the pressure dependence of the Pr L alpha emission spectrum. The collection solid angle is similar to 50 msr, roughly equivalent to that of six traditional spherically bent crystal analyzers. The miniature X-ray emission spectrometer (miniXES) methodology will help encourage the adoption and broad application of high-resolution XES capabilities at hard X-ray synchrotron facilities.
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