دورية أكاديمية
Design and Optimization of a High-Time-Resolution Magnetic Plasma Analyzer (MPA)
| العنوان: | Design and Optimization of a High-Time-Resolution Magnetic Plasma Analyzer (MPA) |
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| المؤلفون: | Benjamin Criton, Georgios Nicolaou, Daniel Verscharen |
| المصدر: | Applied Sciences, Vol 10, Iss 23, p 8483 (2020) |
| بيانات النشر: | MDPI AG, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Technology LCC:Engineering (General). Civil engineering (General) LCC:Biology (General) LCC:Physics LCC:Chemistry |
| مصطلحات موضوعية: | solar wind, space plasma, in-situ plasma analyzer, high time resolution, small-scale processes, magnetic analyzer, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999 |
| الوصف: | In-situ measurements of space plasma throughout the solar system require high time resolution to understand the plasma’s kinetic fine structure and evolution. In this context, research is conducted to design instruments with the capability to acquire the plasma velocity distribution and its moments with high cadence. We study a new instrument design, using a constant magnetic field generated by two permanent magnets, to analyze solar wind protons and α-particles with high time resolution. We determine the optimal configuration of the instrument in terms of aperture size, sensor position, pixel size and magnetic field strength. We conduct this analysis based on analytical calculations and SIMION simulations of the particle trajectories in our instrument. We evaluate the velocity resolution of the instrument as well as Poisson errors associated with finite counting statistics. Our instrument is able to resolve Maxwellian and κ-distributions for both protons and α-particles. This method retrieves measurements of the moments (density, bulk speed and temperature) with a relative error below 1%. Our instrument design achieves these results with an acquisition time of only 5 ms, significantly faster than state-of-the-art electrostatic analyzers. Although the instrument only acquires one-dimensional cuts of the distribution function in velocity space, the simplicity and reliability of the presented instrument concept are two key advantages of our new design. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2076-3417 |
| العلاقة: | https://www.mdpi.com/2076-3417/10/23/8483Test; https://doaj.org/toc/2076-3417Test |
| DOI: | 10.3390/app10238483 |
| الوصول الحر: | https://doaj.org/article/8c8bf9f821e341f58434cde6b02dce34Test |
| رقم الانضمام: | edsdoj.8c8bf9f821e341f58434cde6b02dce34 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20763417 |
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| DOI: | 10.3390/app10238483 |