get_EEDF

plasmapy.diagnostics.langmuir.get_EEDF(probe_characteristic, visualize=False)

Implement the Druyvesteyn method of obtaining the normalized Electron Energy Distribution Function (EEDF).

Parameters:

• probe_characteristic (Characteristic) – The swept probe characteristic that is to be analyzed.
• visualize (bool, optional) – If True a plot of the extracted electron current is shown. Default is False.

Returns:

• energy (Quantity, ndarray) – Array of potentials in V.
• probability (float, ndarray) – Array of floats corresponding to the potentials representing the EEDF in normalized probabilities.

Notes

The Druyvesteyn method requires the second derivative of the probe I-V characteristic, which inherently amplifies noise and measurement errors. Therefore it is advisable to smooth the I-V prior to the use of this function.