An Electrostatic Analyzer to Measure Auroral Electron Energy and Angular Distributions

摘要

An electrostatic analyzer designed to measure the energy spectrum and pitch angle distribution of electrons between 2 and 50 kev in the upper atmosphere during an aurora is described. The details of the instrument's design, operation, and calibration are presented. The flights of two electrostatic analyzers on two Nike Iroquois rockets launched from Fairbanks, Alska, in October 1965 are described; and a preliminary analysis of the data for one sweep over the energy range from 2 to 20 kev is presented. (Author)