Comparison of results of Explorer 21 direct measurement probe
Comparison of ion and electron density and temperature and ionic species measurements made by Explorer 31
Brace, L. H.↗
Engineering topics
Hoffman, J. H.
Publications and source records attributed to Hoffman, J. H..
Composition measurements of the topside ionosphere.
Ionic composition measurements of topside ionosphere from mass spectrometer flown on Explorer XXXI satellite
MASS SPECTROMETER↗
A mass spectrometric determination of the composition of the nighttime topside ionosphere
Mass spectrometric determination of nighttime topside ionosphere composition
MASS SPECTROMETRY↗
Neutral constituents of the upper atmosphere - the minor peaks observed in a mass spectrometer.
Argon and other minor peaks observed in mass spectrometric study of neutral composition of upper atmosphere
IONOSPHERIC COMPOSITION↗
Neutral composition of the atmosphere in the 100- to 200- kilometer range
Spectral analysis of neutral composition of upper atmosphere
SPECTROSCOPY↗