Accession Number : ADP002108

Title :   The Worst Case Charging Environment,

Corporate Author : AIR FORCE GEOPHYSICS LAB HANSCOM AFB MA

Personal Author(s) : Hardy,D. A.

Report Date : 25 JAN 1983

Pagination or Media Count : 15

Abstract : Whether a spacecraft will charge in the auroral zone is crucially dependent on the magnitude of the current to the spacecraft from the precipitating and backscattered electrons and on how that current is distributed over the electron spectrum. To provide theorists and modelers with some initial inputs on this aspects of the spacecraft charging problem a survey was conducted to find examples of electron precipitation where the total integral number flux over the electron spectrum exceeded 10 to the 10th power electrons/sq cm. sec sr and the average energy of the electrons was approximately equal to or exceeded 1 keV.

Descriptors :   *Space charge, *Spacecraft, *Electron flux, Aurorae, Electrostatic precipitation, Backscattering, Electron impact spectra

Distribution Statement : APPROVED FOR PUBLIC RELEASE