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Estimating the optical depth of Saturn's main rings using the Cassini Langmuir Probe

Arridge, Christopher S.; Wahlund, Jan-Erik; Xystouris, Georgios +1 more

A Langmuir Probe (LP) measures currents from incident charged particles as a function of the applied bias voltage. While onboard a spacecraft the particles are either originated from the surrounding plasma, or emitted (e.g. through photoemission) from the spacecraft itself. The obtained current-voltage curve reflects the properties of the plasma i…