The instrument consisted of dual 90-deg quadraspherical electrostatic analyzers, one with 26 individual particle detectors and the other with 5 current collectors. The system was capable of measuring incident plasma distribution parameters over the energy range 0.1 to 18 keV for protons and approximately 1-500 eV for electrons. The high-resolution analyzer, with a constant of 9 keV/Q per kV applied to the plates, had a mean plate radius of 9 cm and separation of 0.5 cm. This analyzer which was used to measure ions. A medium-energy analyzer with a mean radius of 12 cm and a 1-cm plate separation (constant of 6 keV/Q per kV applied) was used to detect both ions and electrons. There were a variety of possible operating modes for the experiment; however, the principal mode utilized during the encounter phase was one in which the analyzer plate potential was stepped through its range every one-half revolution of the spacecraft, and all current collectors or channeltrons were read out at the peak flux roll angle. The high- and medium-resolution analyzers operated independently, so that a cross-check between these analyzers was possible. The dynamic range for the particle fluxes was from 1.0E+2 to 3.0E+9/(sq cm-s) and the proton temperature could be ascertained down to 2.0E+3 deg K.

Instrument Overview
  ===================
    The plasma analyzer instrument carried by the Pioneer 10 spacecraft
    looked toward the Sun through a hole in the spacecraft's large
    dish-shaped antenna. The solar wind entered the plasma analyzer
    apertures between 2 quadraspherical plates where the direction of
    arrival, the energy, and the number of ions and electrons making up
    the solar wind were measured.
 
    The instrument had a high resolution and a medium resolution
    analyzer to detect particles of different energy levels. Energies of
    these particles were described in terms of electron volts (eV).
 
    A voltage was applied across the quadraspherical plates in a maximum
    of 64 steps, at a rate of one step per spacecraft revolution, to
    count particles in discrete energy ranges. Direction of particle
    travel was found from the way the instrument was pointed and from
    the particular target within the instrument that detected it.
 
    The high resolution analyzer had 26 continuous-channel multipliers
    (CCM) to measure the number of ions per second between 100 and 8,000
    electron volts. The medium resolution analyzer had five
    electrometers to count ions of 100 to 18,000 electron volts and
    electrons of 1 to 500 electron volts.
 
  ['Instrument Overview' was adapted from FIMMELETAL p. 50-51.]

extracted metadata from PDS3 catalog and
                    modified to comply with PDS4 Information Model

QUADRISPHERICAL PLASMA ANALYZER for P10

CHARGED PARTICLE INSTRUMENT for P10

COSMIC RAY TELESCOPE for P10

GEIGER TUBE TELESCOPE for P10

HELIUM VECTOR MAGNETOMETER for P10

TRAPPED RADIATION DETECTOR for P10

ULTRAVIOLET PHOTOMETER for P10

ENERGETIC PARTICLES DETECTOR for GO

GALILEO DUST DETECTION SYSTEM for GO

HEAVY ION COUNTER for GO

TRIAXIAL FLUXGATE MAGNETOMETER for GO

NEAR INFRARED MAPPING SPECTROMETER for GO

PLASMA SCIENCE EXPERIMENT for GO

PHOTOPOLARIMETER RADIOMETER for GO

PLASMA WAVE RECEIVER for GO

RADIO SCIENCE SUBSYSTEM for GO

GALILEO ORBITER STAR SCANNER for GO

SOLID STATE IMAGING SYSTEM for GO

ULTRAVIOLET SPECTROMETER for GO

PIONEER F

PIONEER 10

GALILEO MILLENNIUM MISSION (GMM)

GALILEO

GALILEO ORBITER

SOLAR WIND

NAIF ID 599

Jupiter

Pioneer 10 Quadrispherical Plasma Analyzer

Description

Identifier (LID)

Version