期刊
ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES
卷 79, 期 -, 页码 515-526出版社
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S205327332300863X
关键词
tensor tomography; SAXS; smallangle X-ray scattering; scattering; reciprocalspace maps; optimization
We present a method using band-limited spherical functions for the reconstruction of reciprocal-space maps of various nanostructures. The method has been thoroughly tested and evaluated for its robustness and computational performance.
The development of small-angle scattering tensor tomography has enabled the study of anisotropic nanostructures in a volume-resolved manner. It is of great value to have reconstruction methods that can handle many different nanostructural symmetries. For such a method to be employed by researchers from a wide range of backgrounds, it is crucial that its reliance on prior knowledge about the system is minimized, and that it is robust under various conditions. Here, a method is presented that employs band-limited spherical functions to enable the reconstruction of reciprocal-space maps of a wide variety of nanostructures. This method has been thoroughly tested and compared with existing methods in its ability to retrieve known reciprocal-space maps, as well as its robustness to changes in initial conditions, using both simulations and experimental data. It has also been evaluated for its computational performance. The anchoring of this method in a framework of integral geometry and linear algebra highlights its possibilities and limitations.
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