Convergent-beam X-ray crystallography

Li, C.; Zakharova, M.; Prasciolu, M.; Wong, J.C.; Fleckenstein, H.; Ivanov, N.; Zhang, W.; Butola, M.; Dresselhaus, J.L.; Aquino, I.D.G.; Egorov, D.; Middendorf, P.; Henkel, A.; Klopprogge, B.; Klemeyer, L.; Beck, T.; Yefanov, O.; Barthelmess, M.; Sprenger, J.; Oberthuer, D.; Bajt, S.; Chapman, H.N.

doi:10.1107/S1600576726005236

Journal of Applied Crystallography Journal of Applied
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Figure 2
Vitamin B₁₂ snapshot convergent-beam diffraction. (a) A calculated diffraction pattern for a photon energy of 17.5 keV, with Bragg streaks colored according to the position of the $[{\bf k}_{{\rm in}}]$ wavevectors in the lens aperture as mapped in (b). The corresponding deficiency lines are mapped across the lens pupil in (c). (d) Experimental CBXD pattern of a vitamin B₁₂ crystal recorded with a lens of $[{\rm NA} = 0.028]$ at a defocus of $[\Delta f]$ = 3.5 mm, and in the same orientation as calculated in (a) [from Chapman et al. (2025

), reproduced under the terms of a CC4 license]. (e) The mapping of the measured Bragg streaks to their corresponding incident $[{\bf k}_{{\rm in}}]$ wavevectors in the lens pupil. (f) Optical image of the crystal from the beamline in-line microscope for the crystal orientation used for (d).

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ISSN: 1600-5767

Volume 59| Part 4| August 2026| Pages 1200-1218

https://doi.org/10.1107/S1600576726005236

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