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The design of the Langmuir probe onboard a seismo-electromagnetic satellite
Guan Yi-bing; Wang Shi-jin; Liu Chao; Feng Yu-bo; Guan, YB (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China.
Department空间科学部
Source PublicationINTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: SPACE EXPLORATION TECHNOLOGIES AND APPLICATIONS
2011
Pages819624
Language英语
ISSN0277-786X
ISBN978-0-81948-837-4
AbstractThe double Langmuir probe, as a payload of a seism-electromagnetic satellite, has been designed for in situ measurements of the parameters of the ionosphere plasma on the 500km altitude orbit to research the electromagnetic coupling between the solid-earth activities and the ionosphere disturbances. The Langmuir probe is comprised of two spherical sensors: the diameter of the smaller one is 1cm and the other one is 5cm. The two sensors are mounted on two parallel booms on the satellite, which are half meter far from each other. The two main ionosphere parameters measured by the Langmuir probe are electron density and electron temperature, which are computed from the I-V curves. The I-V curve is given by a current flow through a sensor in case of a sweep voltage is applied to the sensor. There are three main work modes for the Langmuir probe: the normal mode, the burst mode and the decontamination mode. The normal mode is for the general measurement of the ionosphere parameters around the globe with 1s time resolution, while the burst mode is to measure the ionosphere over the interested areas, like the areas with more earthquake activities, with 0.5s time resolution. The decontamination mode would work if the I-V curves shown hysteresis phenomenon, which indicated that the sensors may be contaminated by the outgassing of the satellite. The description of the Langmuir probe instrument and its capabilities are provided.; The double Langmuir probe, as a payload of a seism-electromagnetic satellite, has been designed for in situ measurements of the parameters of the ionosphere plasma on the 500km altitude orbit to research the electromagnetic coupling between the solid-earth activities and the ionosphere disturbances. The Langmuir probe is comprised of two spherical sensors: the diameter of the smaller one is 1cm and the other one is 5cm. The two sensors are mounted on two parallel booms on the satellite, which are half meter far from each other. The two main ionosphere parameters measured by the Langmuir probe are electron density and electron temperature, which are computed from the I-V curves. The I-V curve is given by a current flow through a sensor in case of a sweep voltage is applied to the sensor. There are three main work modes for the Langmuir probe: the normal mode, the burst mode and the decontamination mode. The normal mode is for the general measurement of the ionosphere parameters around the globe with 1s time resolution, while the burst mode is to measure the ionosphere over the interested areas, like the areas with more earthquake activities, with 0.5s time resolution. The decontamination mode would work if the I-V curves shown hysteresis phenomenon, which indicated that the sensors may be contaminated by the outgassing of the satellite. The description of the Langmuir probe instrument and its capabilities are provided.
KeywordLangmuir Probe Ionosphere Satellite Electron Density Electron Temperature
Conference NameInternational Symposium on Photoelectronic Detection and Imaging 2011 - Space Exploration Technologies and Applications
Conference DateMAY 24-26, 2011
Conference PlaceBeijing, PEOPLES R CHINA
Indexed ByEI ; CPCI
Document Type会议论文
Identifierhttp://ir.nssc.ac.cn/handle/122/2939
Collection空间技术部
Corresponding AuthorGuan, YB (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Guan Yi-bing,Wang Shi-jin,Liu Chao,et al. The design of the Langmuir probe onboard a seismo-electromagnetic satellite[C]. BELLINGHAM:SPIE-INT SOC OPTICAL ENGINEERING,2011:819624.
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