Important

The Analysis and Diagnostic framework is in active development at the moment. For the foreseeable future, the API will be in continuous flux as functionality is added and modified. To follow the package development please visit our GitHub Project ( https://github.com/PlasmaPy/PlasmaPy/projects/19 ) and comment on any of the relevant issues and/or pull requests.

# Langmuir analysis¶

Defines the Langmuir analysis module as part of the diagnostics package.

## Functions¶

`swept_probe_analysis` (probe_characteristic, …) |
Attempt to perform a basic swept probe analysis based on the provided characteristic and probe data. |

`get_plasma_potential` (probe_characteristic[, …]) |
Implement the simplest but crudest method for obtaining an estimate of the plasma potential from the probe characteristic. |

`get_floating_potential` (probe_characteristic) |
Implement the simplest but crudest method for obtaining an estimate of the floating potential from the probe characteristic. |

`get_electron_saturation_current` (…) |
Obtain an estimate of the electron saturation current corresponding to the obtained plasma potential. |

`get_ion_saturation_current` (probe_characteristic) |
Implement the simplest but crudest method for obtaining an estimate of the ion saturation current from the probe characteristic. |

`get_ion_density_LM` (ion_saturation_current, …) |
Implement the Langmuir-Mottley (LM) method of obtaining the ion density. |

`get_electron_density_LM` (…) |
Implement the Langmuir-Mottley (LM) method of obtaining the electron density. |

`extract_exponential_section` (probe_characteristic) |
Extract the section of exponential electron current growth from the probe characteristic. |

`extract_ion_section` (probe_characteristic) |
Extract the section dominated by ion collection from the probe characteristic. |

`get_electron_temperature` (exponential_section) |
Obtain the Maxwellian or bi-Maxwellian electron temperature using the exponential fit method. |

`extrapolate_electron_current` (…[, …]) |
Extrapolate the electron current from the Maxwellian electron temperature obtained in the exponential growth region. |

`reduce_bimaxwellian_temperature` (T_e, …) |
Reduce a bi-Maxwellian (dual) temperature to a single mean temperature for a given fraction. |

`get_ion_density_OML` (probe_characteristic, …) |
Implement the Orbital Motion Limit (OML) method of obtaining an estimate of the ion density. |

`extrapolate_ion_current_OML` (…[, visualize]) |
Extrapolate the ion current from the ion density obtained with the OML method. |

`get_EEDF` (probe_characteristic[, visualize]) |
Implement the Druyvesteyn method of obtaining the normalized Electron Energy Distribution Function (EEDF). |

## Classes¶

`Characteristic` (bias, current) |
Class representing a single I-V probe characteristic for convenient experimental data access and computation. |