🔌 Langmuir Probe: Current-Voltage Curve, Electron Temperature and Density (2D)

A probe tip in a glowing plasma with a dashed sheath edge that grows as the bias is swept, and ions and electrons streaming toward it. Set the plasma density, the electron temperature, the ion mass, the plasma potential, the probe size and the measurement noise, and see the current-voltage curve, the floating potential, the Debye length and the electron temperature recovered by fitting the retarding region. The electron flux, the Bohm factor, the floating potential and the fit are checked numerically, with four in-page numerical checks.