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用于X射线自由电子激光实验的气体动力学虚拟喷嘴的全面表征

Comprehensive characterization of gas dynamic virtual nozzles for x-ray free-electron laser experiments.

作者信息

Karpos Konstantinos, Zaare Sahba, Manatou Dimitra, Alvarez Roberto C, Krishnan Vivek, Ottmar Clint, Gilletti Jodi, Pableo Aian, Doppler Diandra, Ansari Adil, Nazari Reza, Ros Alexandra, Kirian Richard A

机构信息

Department of Physics, Arizona State University, Tempe, Arizona 85287, USA.

Westwood High School, Mesa, Arizona 85201, USA.

出版信息

Struct Dyn. 2024 Nov 26;11(6):064302. doi: 10.1063/4.0000262. eCollection 2024 Nov.

DOI:10.1063/4.0000262
PMID:39606427
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11602214/
Abstract

We introduce a hardware-software system for rapidly characterizing liquid microjets for x-ray diffraction experiments. An open-source python-based software package allows for programmatic and automated data collection and analysis. We show how jet speed, length, and diameter are influenced by nozzle geometry, gas flow rate, liquid viscosity, and liquid flow rate. We introduce "jet instability" and "jet probability" metrics to help quantify the suitability of a given nozzle for x-ray diffraction experiments. Among our observations were pronounced improvements in jet stability and reliability when using asymmetric needle-tipped nozzles, which allowed for the production of microjects smaller than 250 nm in diameter, traveling faster than 120 m/s.

摘要

我们介绍了一种用于快速表征用于X射线衍射实验的液体微射流的硬件-软件系统。一个基于Python的开源软件包允许进行编程式和自动化的数据收集与分析。我们展示了射流速度、长度和直径是如何受到喷嘴几何形状、气体流速、液体粘度和液体流速影响的。我们引入了“射流不稳定性”和“射流概率”指标，以帮助量化给定喷嘴用于X射线衍射实验的适用性。我们的观察结果包括，使用不对称针尖喷嘴时射流稳定性和可靠性有显著提高，这种喷嘴能够产生直径小于250纳米、速度超过120米/秒的微射流。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09bd/11602214/35f6d6a1070c/SDTYAE-000011-064302_1-g023.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09bd/11602214/a2404391d3da/SDTYAE-000011-064302_1-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09bd/11602214/dcd05346a311/SDTYAE-000011-064302_1-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09bd/11602214/424bf41c0eac/SDTYAE-000011-064302_1-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09bd/11602214/efb1dd4535c7/SDTYAE-000011-064302_1-g017.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/09bd/11602214/3dbc0b2859bc/SDTYAE-000011-064302_1-g018.jpg
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