CEA Grenoble, IRIG, MEM, NRS, Univ. Grenoble Alpes, 17 rue des Martyrs, 38000, Grenoble, France.
ESRF - The European Synchrotron, 71 Avenue des Martyrs, 38000, Grenoble, France.
Sci Rep. 2020 Jul 29;10(1):12760. doi: 10.1038/s41598-020-69678-5.
We explore the use of continuous scanning during data acquisition for Bragg coherent diffraction imaging, i.e., where the sample is in continuous motion. The fidelity of continuous scanning Bragg coherent diffraction imaging is demonstrated on a single Pt nanoparticle in a flow reactor at [Formula: see text] in an Ar-based gas flowed at 50 ml/min. We show a reduction of 30% in total scan time compared to conventional step-by-step scanning. The reconstructed Bragg electron density, phase, displacement and strain fields are in excellent agreement with the results obtained from conventional step-by-step scanning. Continuous scanning will allow to minimise sample instability under the beam and will become increasingly important at diffraction-limited storage ring light sources.
我们探索了在布拉格相干衍射成像中使用连续扫描进行数据采集，即样品处于连续运动状态。在基于氩气的 50ml/min 流速中，我们在[Formula: see text]下的流动反应器中对单个 Pt 纳米粒子进行了连续扫描布拉格相干衍射成像的保真度研究。与传统的逐步扫描相比，我们将总扫描时间减少了 30%。重建的布拉格电子密度、相位、位移和应变场与传统逐步扫描得到的结果非常吻合。连续扫描将允许最大限度地减少光束下的样品不稳定性，并且在衍射极限存储环光源下将变得越来越重要。
