Retarding Ion Mass Spectrometer, RIMS

The Retarding Ion Mass Spectrometer, RIMS, Experiment onboard the DE-1 Satellite was designed to perform Energy and Mass per Charge Analysis on Low Energy Ions (Energy less than 50 eV) with Mass/Charge ranging from 1 amu/Z to 40 amu/Z. RIMS significantly improved capabilities over previous Retarding Potential Analyzer, RPA, Instrumenpt by providing Ion Mass/Charge Separation so that RPA and Spin Curves are obtained separately for each programmed Species. These enhanced Instrument Capabilities, combined with the DE-1 Orbit, produced a unique opportunity to investigate the variable Dynamics and Composition of the Low Energy Ion Population in the near Earth Space Environment.

DE-1/RIMS consists of four Instrument Assemblies interconnected to form one Experiment. Three of the Assemblies are Sensor Heads and one is the Central Electronics Assembly, CEA. The three Heads are labeled according to the Mounting Axis on the DE-1 Spacecraft: Radial, +Z, and -Z. The radial Sensor Views perpendicular to the Spacecraft Spin Axis, while the +Z and -Z Sensors on the Ends of the Spacecraft View parallel and anti-parallel to the Spin Axis. The Central Electronics Assembly provides the Spacecraft Interface, all Data Processing, Command Decoding, and complete Timing Control of the entire RIMS Experiment. The Description Text is adapted from Content on the DE-1 Retarding Ion Mass Spectrometer, RIMS, Overview Web Page, listed in the Information URL below.

DE-1卫星搭载的减速离子质谱仪（RIMS）旨在对低能离子（能量低于50电子伏特）进行能量和电荷量分析，其质量/电荷比范围在1 amu/Z至40 amu/Z之间。RIMS相较于先前的减速电势分析仪（RPA）仪器，显著提升了分析能力，通过提供离子质量/电荷分离，使得针对每个编程物种均可单独获得RPA和自旋曲线。这些增强的仪器性能，结合DE-1卫星的轨道特性，为研究近地空间环境中低能离子群体的动态变化和组成结构提供了独特的机遇。
DE-1/RIMS由四个仪器组件相互连接构成一个实验。其中三个组件为传感器头部，一个为中央电子组件（CEA）。三个头部根据DE-1航天器的安装轴进行标记：径向、+Z和-Z。径向传感器视图垂直于航天器自旋轴，而位于航天器端部的+Z和-Z传感器则平行和反平行于自旋轴。中央电子组件负责提供航天器接口、所有数据处理、命令解码以及整个RIMS实验的完整时序控制。本描述文本改编自DE-1减速离子质谱仪（RIMS）概述网页内容，相关信息请参阅以下URL。