Dual segmented Langmuir probe

Dual Segmented Langmuir Probe (DSLP) is an instrument developed primarily by Czech researchers and engineers to study the magnetospheric background plasma flown on board the spacecraft of the European Space Agency (ESA) Proba 2. Data acquired by DSLP will be used to reach these specific scientific goals: Directional Measurements: Contrary to classical Langmuir probes, the new DSLP concept of data acquisition from the independent segments will enable to study also plasma characteristics in different directions.

Source: Wikipedia — Dual segmented Langmuir probe (CC BY-SA 4.0)