ROCSAT1,IPEI, Ionospheric Plasma and Electrodynamics Instrument

The Ionospheric Plasma and Electrodynamics Instrument (IPEI) is a joint project of the National Space Program Office of the Republic of China, the University of Texas at Dallas, The National Central University, and the National Chiao-Tung University. The IPEI sensors consist of an ion-trap (IT), a pair of ion drift meters (IDM), and a retarding potential analyzer (RPA). The instrument is designed to measure the ion density, temperature, and drift velocity in order to study the large-scale electrodynamics, plasma distribution, and the small-scale plasma structure in the low-latitude ionosphere with emphasis on the equatorial region above Taiwan. The high-resolution measurements will enable detailed studies of equatorial bubbles, Rayleigh-Taylor instability, the ExB drift instability, and the Perkins instability.

我国国家航天局、德克萨斯大学达拉斯分校、国立中央大学以及国立交通大学共同发起的联合项目——电离层等离子体与电动力学仪（IPEI），旨在精确测量电离层低纬度区域，尤其是台湾上空的赤道区域的大规模电动力学、等离子体分布及微小尺度等离子体结构。该仪器由离子陷阱（IT）、一对离子漂移计（IDM）和延迟势能分析仪（RPA）组成。通过高分辨率测量，IPEI能够对赤道泡、雷利-泰勒不稳定性、ExB漂移不稳定性以及珀金斯不稳定性等进行深入研究。