LOW-ENERGY NEUTRAL-ATOM IMAGING TECHNIQUES FOR REMOTE OBSERVATIONS OF THE MAGNETOSPHERE

被引：7
作者：
FUNSTEN, HO
MCCOMAS, DJ
SCIME, EE
机构：
[1] Space and Atmospheric Sciences Group, Los Alamos National Laboratory, Los Alamos, NM
[2] Department of Physics, West Virginia University, Morgantown, WV
来源：
JOURNAL OF SPACECRAFT AND ROCKETS | 1995年 / 32卷 / 05期
关键词：
D O I：
10.2514/3.26703
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Recent developments in the detection of neutral atoms mill enable construction of space-based imagers that may reveal the global structure and dynamics of the terrestrial magnetosphere. The principal technical challenge of imaging low-energy neutral atoms having energies <30 keV is separating them from the intense uv background, to which their detectors are sensitive, with minimal loss of trajectory and energy information. Three instrument concepts for separating low-energy neutral atoms from the background uv are discussed: neutral-atom ionization via transmission through an ultrathin carbon foil and subsequent electrostatic deflection, uv grating polarizers and attenuators, and high-frequency shutters. Hardware associated with each of these concepts is mated to a detector section that provides trajectory, coincidence, and, if required, time-of-flight measurements.
引用
收藏
页码：899 / 904
页数：6
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