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Text: Synchrotron Wide Angle Total Scattering Experiments ( WAXTS ) . WAXTS measurements on CsPbBr 3 NPLs ( three CsPbBr 3 samples ) were performed at the X04SA - MS beamline 111 of the Swiss Light Source ( Paul Scherrer Institute , Villigen , CH ) on colloidal suspensions in toluene loaded in 0.8 mm - diameter certified glass capillaries ( Hilgenberg GmbH G50 ) . The operational beam energies were set at 22 keV ( λ = 0.565483 and 0.565666 Å ) and precisely determined using a - Si powder standard ( NIST 640d , a 0 = 0.543123(8 ) Å nm at 22.5 ° C ) . Total scattering data from the samples were collected in the 0.02−19 Å −1 Q - range using a singlephoton counting silicon microstrip detector ( MYTHEN II ) , 112 together with the X - ray pattern of the empty glass capillary and the sample environment ( He / air ) , subtracted from the pattern of the samples . The transmitted beam intensities from the filled capillaries were independently measured to estimate the samples absorption coefficients , while the computed X - ray attenuation factors from the nominal glass composition were used for the empty capillary . Angular dependent intensities corrections to the raw data were applied , using an X - ray tracing approach . 113 The inelastic Compton scattering signal was added as an additional model component during the data analysis . For the DSE - model refinements , the 0.6−16 Å −1 Q - range was used .<|eot_id|><|start_header_id|>assistant<|end_header_id|>

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