Versatile Langmuir Probe for Outer Planet Missions

Details Versatile Langmuir Probe for Outer Planet Missions Versatile Langmuir Probe for Outer Planet Missions

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm23b1622a&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM23B-1622

Other

[5435] Planetary Sciences: Solid Surface Planets / Ionospheres, [5494] Planetary Sciences: Solid Surface Planets / Instruments And Techniques

Scientific paper

This presentation outlines the design of a Versatile Langmuir Probe (VLP), intended to be deployed as a key instrument on the Europa Jupiter Systems Mission (EJSM) and other outer planet missions. The VLP will make in-situ planetary plasma particle, plasma wave, and electric field measurements that will be critical in developing a comprehensive picture of planetary processes. The VLP is an instrument that comprises two or more sensors that can be configured as either a single LP or a double LP In the single LP mode, instrument voltage sweep patterns and sampling frequencies are configured to target plasma density and temperature measurements. In the double LP mode the instrument is configured to target plasma wave velocity and electric field measurements. The key components of the VLP front-end electronics are the high impedance low noise operation amplifier and a-to-d converter, and GaN high-voltage sweep circuit that are mounted on the probe tip, thus exposing the electronics to the environments of cryo temperature and extreme radiation. The VLP front-end electronics use SiGe and GaN ASIC design tailored for the cryo temperatures and Europa radiation environment.

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