get_plasma_potential¶
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plasmapy.diagnostics.langmuir.get_plasma_potential(probe_characteristic, return_arg=False)¶ Implement the simplest but crudest method for obtaining an estimate of the plasma potential from the probe characteristic.
Parameters: - probe_characteristic (Characteristic) – The probe characteristic that is being analyzed.
- return_arg (bool, optional) – Controls whether or not the argument of the plasma potential within the characteristic array should be returned instead of the value of the voltage. Default is False.
Returns: V_P – Estimate of the plasma potential in units convertible to V.
Return type: Notes
The method used in the function takes the maximum gradient of the probe current as the ‘knee’ of the transition from exponential increase into the electron the saturation region.