Design and performance of a novel neutron powder diffractometer: PEARL at TU Delft

Abstract

The performance of the new neutron powder diffraction instrument PEARL that is installed at the research reactor of Delft University of Technology is reported. It is based on the optimization concepts developed by Cussen [Nucl. Instrum. Methods Phys. Res. Sect. A (2007), 583, 394–406], which lead to high performance competing with existing constant‐wavelength neutron powder diffractometers, despite the relatively low source brightness of the 2 MW reactor of Delft University of Technology.

In situ high-temperature EXAFS measurements on radioactive and air-sensitive molten salt materials

“…The fitted bond distances are listed in Table 1, and compared with the distances obtained by Rietveld refinement (see Appendix B for the refined lattice parameters and atomic positions) of neutron diffraction data 1 (Fig. 7) collected on the same sample batch at the beamline PEARL at the Hoger Onderwijs Reactor at TU Delft (van Eijck et al, 2016). The agreement is very good.…”

Revealing the relation between the structure, Li-ion conductivity and solid-state battery performance of the argyrodite Li6PS5Br solid electrolyte

“…Neutron diffraction data were collected on a new neutron powder diffractometer PEARL of the TU Del. 22 Data were collected at room temperature using the (533) reection of the germanium monochromator (l ¼ 1.665Å). The sample was loaded under argon in a 6 mm diameter air-tight vanadium sample can.…”

PDFgetN3: atomic pair distribution functions from neutron powder diffraction data using ad hoc corrections

“…Together with the so-called take-off angle of the neutrons reflected from the monochromator, the three collimators define the instrumental resolution of a CW diffractometer (Caglioti et al, 1958). PEARL is based at the 2 MW research reactor of TU Delft (van Eijck et al, 2016). Despite the relatively low brilliance of this neutron source, the diffractometer can be considered a rather competitive medium-resolution instrument owing to its high take-off angle at the monochromator and the lack of collimators.…”