Potential observations of an electron-emitting rocket payload and other related plasma measurements

Observations of plasma effects due to an energetic electron beam near a rocket payload are summarized and an attempt is made to outline the basic processes in the plasma such as beam plasma discharge (BPD). The experiment had some unique features such as a high apogee and low background plasma density. The measurements covered most parameters relevant for the study of plasma effects, as well as payload potential, optical and radio emissions, energetic charged particles and plasma densities. Among the noteworthy observations are radio emissions up to VHP frequencies and very high payload potentials which even exceeded the gun voltage. The observed features are interpreted as BPD at low altitudes and as discharges in the E × B field at other heights.