Langmuir Probes

Measures electron/ion density, electron temperature, plasma/floating potential, and $EEDF$ via I–V scans. Supports cylindrical/planar/spherical probes with RF filtering, cooling, and 3D motion platforms.

Key Features

• Measures $n_e$, $n_i$, $T_e$, $V_p$, $V_f$, $EEDF$
• Probe geometries: cylindrical / planar / spherical
• Scan modes: linear/triangle/step with auto scan & averaging
• Materials W/Mo/Ta; sheaths Al2O3/BN/quartz; motion stages available

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Symmetric bias and current between two probes to get $n_e$, $n_i$, $T_e$, and $EEDF$ when ground reference is absent/remote. Suitable for atmospheric jets, floating devices, and strong-noise setups.

Key Features

• Reduced ground dependence, strong noise immunity
• Measures $n_e$, $n_i$, $T_e$; post-process for $EEDF$
• Linear/triangle/step scans with auto modes
• High-sensitivity current chain and sheath options

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Three identical probes sample simultaneously to capture transient $n_e$ and $T_e$ within discharge cycles. Ideal for pulsed discharges and transient thruster studies.

Key Features

• Three-channel synchronous acquisition for transient/pulse events
• Less reliance on full I–V scans, faster sampling
• External trigger/clock sync supported
• High-bandwidth and filtering options for better SNR

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Emissive probes yield higher accuracy for plasma potential and electron temperature; suitable for fine potential mapping. Supports visualized potential/temperature maps.

Key Features

• High-accuracy $V_p$ and $T_e$
• Higher SNR and potential resolution than standard LP
• Compatible with various structures/materials for hot/complex flows
• Outputs visual potential/temperature maps

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