Academic Journal
Real-Time Tomography of Gas-Jets with a Wollaston Interferometer
| العنوان: | Real-Time Tomography of Gas-Jets with a Wollaston Interferometer |
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| المؤلفون: | Andreas Adelmann, Benedikt Hermann, Rasmus Ischebeck, Malte C. Kaluza, Uldis Locans, Nick Sauerwein, Roxana Tarkeshian |
| المصدر: | Applied Sciences, Vol 8, Iss 3, p 443 (2018) |
| بيانات النشر: | MDPI AG, 2018. |
| سنة النشر: | 2018 |
| المجموعة: | LCC:Technology LCC:Engineering (General). Civil engineering (General) LCC:Biology (General) LCC:Physics LCC:Chemistry |
| مصطلحات موضوعية: | interferometry, gas-jets, LWFA, knife-edge, shock-front, real-time, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999 |
| الوصف: | A tomographic gas-density diagnostic using a Single-Beam Wollaston Interferometer able to characterize non-symmetric density distributions in gas jets is presented. A real-time tomographic algorithm is able to reconstruct three-dimensional density distributions. A Maximum Likelihood-Expectation Maximization algorithm, an iterative method with good convergence properties compared to simple back projection, is used. With the use of graphical processing units, real-time computation and high resolution are achieved. Two different gas jets are characterized: a kHz, piezo-driven jet for lower densities and a solenoid valve-based jet producing higher densities. While the first jet is used for free electron laser photon beam characterization, the second jet is used in laser wake field acceleration experiments. In this latter application, well-tailored and non-symmetric density distributions produced by a supersonic shock front generated by a razor blade inserted laterally to the gas flow, which breaks cylindrical symmetry, need to be characterized. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2076-3417 |
| Relation: | http://www.mdpi.com/2076-3417/8/3/443; https://doaj.org/toc/2076-3417 |
| DOI: | 10.3390/app8030443 |
| URL الوصول: | https://doaj.org/article/82ed9cf2598540d0be6cab9d1dda854c |
| رقم الانضمام: | edsdoj.82ed9cf2598540d0be6cab9d1dda854c |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20763417 |
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| DOI: | 10.3390/app8030443 |