Journal
JOURNAL OF SYNCHROTRON RADIATION
Volume 27, Issue -, Pages 1074-1079Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S1600577520007110
Keywords
cryostat; X-ray nanoprobes; XRF; XEOL
Categories
Funding
- Ministerio de Ciencia e Innovacion [RTI2018-097195-B-I00]
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A helium mini-cryostat has been developed for the hard X-ray nanoprobe ID16B of the European Synchrotron to collect X-ray excited optical luminescence and X-ray fluorescence at low temperature (<10K). The mini-cryostat has been specifically designed to fit within the strong space restrictions and high-demanding mechanical constraints imposed by the beamline to provide vibration-free operation and maximal thermal stability. This paper reports the detailed design, architecture and technical requirements of the mini-cryostat, and presents the first experimental data measured using the cryogenic equipment. The resulting cryo-system features ultimate thermal stability, fast cool-down and ultra-low vibrations. The simultaneous X-ray fluorescence and X-ray excited optical luminescence data acquired from bulk GaN and core/shell InGaN/GaN multi-quantum wells validated the excellent performance of the cryostat with ultimate resolution, stability and sensitivity.
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