view article

Figure 7
Outputs from applying pathSQE 2D systematic slicing and BZ folding to a Ge single-crystal dataset measured on the ARCS spectrometer. (a) Excerpt from the [3, 1, 1] BZ Report, showing eight symmetrically equivalent slices along KΓ segments. (b) Point-group-folded data in BZ [3, 1, 1]. Fully folded (c) simulation and (d) INS data along the high-symmetry q path. (e) Thin S(Q, E) shell from a one-minute measurement at fixed crystal orientation, with the out-of-plane [0, 0, L] direction integrated between −0.1 and 0.1 r.l.u. (f) Fully folded data from (e), projected along the high-symmetry q path. (g) The BZ is shown in the top left with the irreducible wedge outlined in black, a single facet of the wedge highlighted in gray and several high-symmetry q points marked in red. The schematic diagram illustrates 15 user-defined lower-symmetry q segments rastering the gray facet, indicated by the horizontal lines. (h) Fully folded data processed along each of the 15 q segments. The pink and blue boxes and corresponding q segments in (g) help indicate where on the rastered facet each segment resides. All spectra processed by pathSQE used Qdim1,step = 0.025 r.l.u. and E = [0, 0.5, 40] meV, while out-of-plane integration widths were set as Qdim2,int = Qdim3,int with values of (ad) 0.05 r.l.u., (f) 0.1 r.l.u. and (h) 0.025 r.l.u.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Follow J. Appl. Cryst.
Sign up for e-alerts
Follow J. Appl. Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds