Instrument Information
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| IDENTIFIER |
urn:nasa:pds:context:instrument:pvmp.bus.bims::1.2
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| NAME |
Ion Mass Spectrometer for Pioneer Venus Probe Bus
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| TYPE |
Spectrometer
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| DESCRIPTION |
The Probe Bus Ion Mass Spectrometer (BIMS) of Pioneer Venus was an ion mass spectrometer experiment that obtained measurements to provide information on the solar wind interaction with Venus, upper atmosphere photochemistry, and the mass and heat transport characteristics of the atmosphere. A Bennett ion spectrometer, similar to units flown on many earth satellites and rockets, measured Venus' upper atmosphere ion concentrations in the mass range from 1 to 60 atomic mass units (u) from the time of crossing Venus' bowshock to bus burnup. The spectrometer consisted of an analyzer tube and electronics package, which contained low- and high-gain pre-amplifiers, amplifiers, a log A/D converted, and RF generator, voltage regulator, command and control, and data handling. The analyzer tube had the ability to produce simulated ion currents for calibration. BIMS operated with repeated explore/adapt cycles, each with a duration of 6.3 seconds.
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| MODEL IDENTIFIER |
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| NAIF INSTRUMENT IDENTIFIER |
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| SERIAL NUMBER |
not applicable
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| REFERENCES |
Taylor, H. A., Jr., et al., Bennett ion mass spectrometers on the Pioneer Venus bus and Orbiter, IEEE Trans. Geosci. Rem. Sens., GE-18, 44-49, doi:10.1109/TGRS.1980.350259, Jan. 1980.
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