Dataset for first resonant PXCT experiments at the SWING beamline at Synchrotron Soleil
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This dataset was acquired at the SWING beamline at the French synchrotron SOLEIL. The ptychographic scans consisted of 205 diffraction patterns from a field of view of 14x12 µm² with an exposure time of 100 ms per point. The ptychographic reconstruction was carried out using the PtychoShelves Matlab software package [1], involving 200 iterations of the difference map (DM) algorithm, followed by 100 iterations of the maximum likelihood (ML) algorithm. The dataset consists of the ptychographic reconstructions of two ptychographic tomography scans at energies 8383 eV and 8337 eV, the angle files, and the corresponding tomograms as slices. Niwire_3D_8383 - ptychographic reconstructions of the 200 projections at 3838 eV Niwire_3D_8337 - ptychographic reconstructions of the 210 projections at 8337 eV (10 duplicate angles) Niwire8383_TIFF_delta_FBP_ram-lak_freqscl_1.00 - tomographic reconstruction (with PtychoShelves [2]) of the Niwire measured at 8383 eV Niwire8337_TIFF_delta_FBP_ram-lak_freqscl_1.00 - tomographic reconstruction (with PtychoShelves [2]) of the Niwire measured at 8337 eV angles_Niwire8383 - the angles of the tomographic scan at 8383 eV angles_Niwire8383 - the angles of the tomographic scan at 8337 eV [1] Wakonig, K., Stadler, H.-C., Odstrčil, M., Tsai, E. H. R., Diaz, A., Holler, M., Usov, I., Raabe, J., Menzel, A. & Guizar-Sicairos, M. (2020). PtychoShelves, a versatile high-level framework for high-performance analysis of ptychographic data. J. Appl. Cryst. 53, 574-586. [2] Michal Odstrčil, Mirko Holler, Jörg Raabe, and Manuel Guizar-Sicairos, "Alignment methods for nanotomography with deep subpixel accuracy," Opt. Express 27, 36637-36652 (2019)
本数据集采集于法国同步辐射光源SOLEIL的SWING光束线站。本次叠层成像（ptychographic）扫描共获取205幅衍射图案，视场为14×12 µm²，每点曝光时长为100 ms。叠层成像重建工作采用PtychoShelves Matlab软件包[1]完成，先后执行200次差分映射（difference map, DM）算法迭代，随后进行100次最大似然（maximum likelihood, ML）算法迭代。 本数据集包含两个不同入射能量下的叠层成像断层扫描重建结果、角度文件以及对应的断层切片图像： - Niwire_3D_8383：能量为3838 eV时200幅投影的叠层成像重建结果 - Niwire_3D_8337：能量为8337 eV时210幅投影（含10个重复角度）的叠层成像重建结果 - Niwire8383_TIFF_delta_FBP_ram-lak_freqscl_1.00：采用PtychoShelves[2]重建的、8383 eV下Niwire样品的断层扫描结果 - Niwire8337_TIFF_delta_FBP_ram-lak_freqscl_1.00：采用PtychoShelves[2]重建的、8337 eV下Niwire样品的断层扫描结果 - angles_Niwire8383：8383 eV下断层扫描的角度文件 - angles_Niwire8383：8337 eV下断层扫描的角度文件 参考文献： [1] Wakonig, K., Stadler, H.-C., Odstrčil, M., Tsai, E. H. R., Diaz, A., Holler, M., Usov, I., Raabe, J., Menzel, A. & Guizar-Sicairos, M. (2020). 《PtychoShelves：一款用于叠层成像数据高性能分析的通用高阶框架》. J. Appl. Cryst. 53, 574-586. [2] Michal Odstrčil, Mirko Holler, Jörg Raabe, Manuel Guizar-Sicairos. 《具有亚像素级精度的纳米断层扫描对准方法》, Opt. Express 27, 36637-36652 (2019).
