2020同步年報

Facility Status 107 Fig. 1 : Experimental gap size as a function of photon energy between the third and fifth harmonics. Table 2 : Experimental parameters and available non-ambient devices at TPS 19A1 and TPS 19A2 . 19A1 X-ray energy range: 12−20 keV Beam size: 500 x 500 μm 2 High-resolution PXRD measurement: MYTHEN 18K (Δ2θ: ~ 0.02°) Ultra-high-resolution PXRD measurement: Multi-crystal analyzer (Δ2θ: ~ 0.005°) Available non-ambient sample environments: 1. LN 2 cryostream (90 K−RT) 2. Hot-air gas blower (RT−1000 °C) 3. LHe Dynaflow cryostat (10 K−150 K) 19A2 X-ray energy range: 12−40 keV Beam size: 500 x 500 μm 2 (without KB focusing mirrors) Beam size: 20 x 20 μm 2 (with KB focusing mirrors) General resolution XRD measurement: XRD 1611 (Δ2θ: ~ 0.06°) Available non-ambient sample environments: 1. LN 2 cryostream (90 K−RT) 2. Hot air gas blower (RT−1000 °C) 3. Potentiostat (single cell: Autolab PGSTAT204; multi-cell Biologic VSP3e) 4. Gas loading system (N 2 , CO 2 , Ar, CO, H 2 ) 5. High-temperature oven (Anton Paar HTK1200N, RT−1,200 °C) 6. High-pressure (diamond anvil cell) for four years (2017 − 2020), and has already produced over 40 scientif- ic publications. It includes a large three-circle diffractometer with detec- tors of two types, a one-dimensional position-sensitive detector MYTHEN 18K and multi-crystal analyzers ( Fig. 2 ). The detailed design and prelim- inary results have been reported in references 2 and 3. The second endstation of TPS 19A is specially designed for complicated setups such as a non-ambient environment or a sample that could not be loaded into a capillary tube, a diamond anvil cell for large pressure, gas loading, battery charge or discharge, reac- tion chambers with custom devices etc . The size of the incident beam can be focused from 600 to 20 µm with Kirkpatrick-Baez (KB) mirrors and hexapods (Physik Instrumente) for motion control ( Fig. 2 ). The benefit of a smaller beam spot could be applied to those experiments requiring a small Fig. 2 : Two endstations of TPS 19A : TPS 19A1 , high-resolution XRD; TPS 19A2 general-resolution XRD. 19A1 High Resolution Powder X-ray Diffraction 19A2 General Resolution Powder X-ray Diffraction