The design of the Langmuir probe onboard a seismo-electromagnetic satellite

	The design of the Langmuir probe onboard a seismo-electromagnetic satellite
	Guan Yi-bing; Wang Shi-jin; Liu Chao; Feng Yu-bo
	2011
会议名称	International Symposium on Photoelectronic Detection and Imaging 2011 - Space Exploration Technologies and Applications
会议日期	MAY 24-26, 2011
会议地点	Beijing, PEOPLES R CHINA
关键词	Langmuir probe ionosphere satellite electron density electron temperature
页码	819624
通讯作者	Guan, YB (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China.
中文摘要	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.
英文摘要	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.
收录类别	EI ; CPCI
会议主办者	Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut
会议录	INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: SPACE EXPLORATION TECHNOLOGIES AND APPLICATIONS
会议录出版者	SPIE-INT SOC OPTICAL ENGINEERING
会议录出版地	BELLINGHAM
学科主题	空间技术
语种	英语
ISSN号	0277-786X
ISBN号	978-0-81948-837-4
内容类型	会议论文
源URL	[http://ir.nssc.ac.cn/handle/122/2939]
专题	国家空间科学中心_空间技术部
推荐引用方式 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]. 见:International Symposium on Photoelectronic Detection and Imaging 2011 - Space Exploration Technologies and Applications. Beijing, PEOPLES R CHINA. MAY 24-26, 2011.