The Voyager program at APL

Details The Voyager program at APL The Voyager program at APL

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jhatd..11...63m&link_type=abstract

Johns Hopkins APL Technical Digest (ISSN 0270-5214), vol. 11, Jan.-June 1990, p. 63-71. Research supported by NASA.

Physics

1

Charged Particles, Planetary Environments, Radiation Detectors, Spacecraft Instruments, Voyager Project, Interplanetary Medium, Neptune (Planet), Planetary Magnetospheres

Scientific paper

An overview is presented of the structure and function of the Applied Physics Laboratory's low-energy charged particle (LECP) instrument used in NASA's Voyager program. The LECP experiment was designed to measure the intensity, energy spectra, composition, angular distributions, and spatial and temporal characteristics of ions and electrons that are encountered by the spacecraft. Scientific findings of previous planetary encounters are noted, and color energy-time spectrograms that summarize the LECP results at each planet are presented and analyzed. Some details of the encounter by Voyager 2 of Neptune are provided, noting that the characteristics of the trajectory that was used provided for close observation of Triton, observations of particle structures, and exploration of Neptune's polar cap. A schematic of Neptune's magnetosphere is provided and analyzed.

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