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. 2021 Nov 29;11:23046. doi: 10.1038/s41598-021-02467-w

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© The Author(s) 2021, corrected publication 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Beam entry/exit trajectories for stairwise and spiral acquisition schemes from the sample’s point of view. The number of turns n and the total number of projections are indicated on top of the plots. The tilt angle $β$ for the shown stairwise trajectory with $n = 1$ is $0^{\circ}$ but it can be chosen to be any angle between $0^{\circ}$ and $45^{\circ}$ .