Spatial ion-beam diagnostics

Faraday Probe Virtual Instrument

Select an arc scan, a planar array, or a single-probe pulse TOF measurement. Each mode gives a different ion-current result.

Arc scan: Angular ion current-density distribution jᵢ(θ)
Planar array: Two-dimensional ion current-density map jᵢ(x,y)
Single-probe pulse TOF: Current waveform, velocity, and energy for selected ion-species models

Faraday probe scan configuration

Measurement setup

01Thruster operating point

Thruster

Discharge voltage (V)

Xenon flow rate (mg/s)

02Scan geometry

Measurement radius 10–120 cm

50 cm

Angular sampling

03Signal conditions

Measurement noiseAdds 3% simulated measurement noise.Include CEX backgroundAdds a charge-exchange background for a facility pressure of 5 × 10⁻⁴ Pa.

Angular ion current-density distribution jᵢ(θ)

Start a scan to calculate data

Primary outputThe scan gives jᵢ(θ) at radius R. The total-current calculation uses an axisymmetric beam.

Scan results

Start a scan to calculate jᵢ(θ).