Accession Number : ADA251403

Title :   Vehicle Potential Measurements During Electron Emission in the Ionosphere,

Corporate Author : ROME LAB GRIFFISS AFB NY

Personal Author(s) : Myers, Neil B.

Report Date : MAR 1991

Pagination or Media Count : 43

Abstract : CHARGE-2 was a sounding rocket experiment to study the interaction of an electron beam with the environment. Additionally, experiments on the interaction of a vehicle at high potential (up to 1 kV) with the ionosphere were performed. The payload consisted of two parts that were separated during the flight. A 1 -kV electron gun was flown on the mother vehicle along with numerous diagnostic Instruments. The daughter vehicle was deployed on a conducting, insulated tether to a distance of up to 426 m perpendicular to the geomagnetic field. The high potential was obtained by electron emission from the mother vehicle, and by voltage biasing of the daughter vehicle. Measurements of transient vehicle potential were obtained with a sample interval of 100 ns. Measurements of the steady-state vehicle potential were typically limited to about half of the lkV accelerating potential of the electron gun. The daughter vehicle collected current consistent with magnetically limited models of current collection. Beam-Plasma Interaction, Active Experiments, Tethered Payloads, Vehicle Potential, Electron Beams.

Descriptors :   *SOUNDING ROCKETS, *SPACE CHARGE, *SOUNDING ROCKETS, *ELECTROMAGNETIC ENVIRONMENTS, COLLECTION, ELECTRON BEAMS, ELECTRON EMISSION, ELECTRON GUNS, FLIGHT, INTERACTIONS, INTERVALS, IONOSPHERE, MEASUREMENT, MODELS, PAYLOAD, STEADY STATE, TRANSIENTS, VOLTAGE.

Subject Categories : Atmospheric Physics
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE