Measuring the electric fields in space
Measuring electric fields in the space environments of the Earth and other planets helps us to understand the electric field structures and plasma waves in the space. An addition usage of data from electric field measurements is to derive the cold ions in the magnetosphere which are invisible to ord...
| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
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Editorial Office of Reviews of Geophysics and Planetary Physics
2021-09-01
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| Series: | 地球与行星物理论评 |
| Subjects: | |
| Online Access: | https://www.sjdz.org.cn/en/article/doi/10.19975/j.dqyxx.2021-013 |
| _version_ | 1797858674716180480 |
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| author | Kun Li Jun Cui Yong Wei |
| author_facet | Kun Li Jun Cui Yong Wei |
| author_sort | Kun Li |
| collection | DOAJ |
| description | Measuring electric fields in the space environments of the Earth and other planets helps us to understand the electric field structures and plasma waves in the space. An addition usage of data from electric field measurements is to derive the cold ions in the magnetosphere which are invisible to ordinary energy spectrometers. The cold ions of ionospheric origin dominate the ion population in the magnetosphere. They are accelerated by the ambipolar electric field in the ionosphere to escape velocities. The loss of cold ions plays an important role in evolution of the atmosphere and habitability. In this review, we summarize two types of electric field instruments being widely used in space exploration, and the method to derive parameters of cold ions in the magnetosphere from the measurements made by the two types of electric field instruments. Based on existing technologies, we propose a new instrument to measure the ambipolar electric field in the polar region with a magnitude of about 10−6 Vm−1. This new instrument may be onboard a future satellite operating in the polar region, and give us clues on evolution of atmosphere and habitability. |
| first_indexed | 2024-04-09T21:17:13Z |
| format | Article |
| id | doaj.art-40cb7aee78da4d7f8258dd62d8b7decf |
| institution | Directory Open Access Journal |
| issn | 2097-1893 |
| language | zho |
| last_indexed | 2024-04-09T21:17:13Z |
| publishDate | 2021-09-01 |
| publisher | Editorial Office of Reviews of Geophysics and Planetary Physics |
| record_format | Article |
| series | 地球与行星物理论评 |
| spelling | doaj.art-40cb7aee78da4d7f8258dd62d8b7decf2023-03-28T07:10:27ZzhoEditorial Office of Reviews of Geophysics and Planetary Physics地球与行星物理论评2097-18932021-09-0152547348210.19975/j.dqyxx.2021-0132021-013Measuring the electric fields in spaceKun Li0Jun Cui1Yong Wei2Planetary Environmental and Astrobiological Research Laboratory, School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai 519082, ChinaPlanetary Environmental and Astrobiological Research Laboratory, School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai 519082, ChinaInstitute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100190, ChinaMeasuring electric fields in the space environments of the Earth and other planets helps us to understand the electric field structures and plasma waves in the space. An addition usage of data from electric field measurements is to derive the cold ions in the magnetosphere which are invisible to ordinary energy spectrometers. The cold ions of ionospheric origin dominate the ion population in the magnetosphere. They are accelerated by the ambipolar electric field in the ionosphere to escape velocities. The loss of cold ions plays an important role in evolution of the atmosphere and habitability. In this review, we summarize two types of electric field instruments being widely used in space exploration, and the method to derive parameters of cold ions in the magnetosphere from the measurements made by the two types of electric field instruments. Based on existing technologies, we propose a new instrument to measure the ambipolar electric field in the polar region with a magnitude of about 10−6 Vm−1. This new instrument may be onboard a future satellite operating in the polar region, and give us clues on evolution of atmosphere and habitability.https://www.sjdz.org.cn/en/article/doi/10.19975/j.dqyxx.2021-013electric field instrumentcold ionsmagnetosphereambipolar electric fieldatmospheric escape |
| spellingShingle | Kun Li Jun Cui Yong Wei Measuring the electric fields in space 地球与行星物理论评 electric field instrument cold ions magnetosphere ambipolar electric field atmospheric escape |
| title | Measuring the electric fields in space |
| title_full | Measuring the electric fields in space |
| title_fullStr | Measuring the electric fields in space |
| title_full_unstemmed | Measuring the electric fields in space |
| title_short | Measuring the electric fields in space |
| title_sort | measuring the electric fields in space |
| topic | electric field instrument cold ions magnetosphere ambipolar electric field atmospheric escape |
| url | https://www.sjdz.org.cn/en/article/doi/10.19975/j.dqyxx.2021-013 |
| work_keys_str_mv | AT kunli measuringtheelectricfieldsinspace AT juncui measuringtheelectricfieldsinspace AT yongwei measuringtheelectricfieldsinspace |