optmat.gas#

The gases: curated data and models of their optical response.

The linear index (the per-particle polarizability, optmat.gas.models, fitted by optmat.gas.fitting and reduced from the data by optmat.gas.reduction with the densities of optmat.gas.eos and Lorentz-Lorenz), the absorption and the extreme ultraviolet (optmat.gas.absorption, optmat.gas.euv), the infrared bands (optmat.gas.infrared), the second hyperpolarizability (optmat.gas.nonlinear), the Raman lines, their widths and the response functions (optmat.gas.raman, optmat.gas.linewidths, optmat.gas.raman_response), the ionisation parameters and the strong-field ionisation rates of atoms and molecules (optmat.gas.ionisation, optmat.gas.ionisation_rates, optmat.gas.molecular_ionisation_rates) and the composition of dry air (optmat.gas.composition). The gas models’ configurations and stored fits are in GAS_DATA_DIRECTORY.

Module Attributes

GAS_DATA_DIRECTORY

The gas models' configurations and stored fits (the curated records are shared).

optmat.gas.GAS_DATA_DIRECTORY: Final = PosixPath('/home/docs/checkouts/optmat/checkouts/7/src/optmat/data/gas')#: The gas models’ configurations and stored fits (the curated records are shared).

Modules

`absorption`	The complex polarizability of a measured absorption spectrum (Kramers-Kronig).
`air`	Air as a propagation model: the sum of its constituents (OEP 1, section 4.4).
`comparison`	The refractiveindex.info database, as a comparison source only.
`composition`	The composition of gas mixtures, from the curated records: dry air (TC-548).
`crosschecks`	Test the recommended models against dispersion data that no single fit uses.
`eos`	Number densities of the gases: the ideal gas, the real gas, and its inverse.
`euv`	Build the complex polarizability from photoabsorption (the extreme ultraviolet).
`fitting`	Fit oscillator-strength models to the curated data.
`gases`	The gas species the package curates data for.
`infrared`	Vibrational (infrared) contributions to the polarizability, from HITRAN.
`ionisation`	The parameters of the strong-field ionisation rates of the gases (TC-439).
`ionisation_rates`	Strong-field ionisation rates of the noble gases (TC-652 to TC-662).
`ionisation_validation`	Test the ionisation-rate models against the curated references (TC-660).
`linewidths`	The widths of Raman lines against density, temperature and collision partner.
`lorentz_lorenz`	Convert between the per-particle polarizability and the refractive index.
`mixture`	The refractive index of a gas mixture at finite density (OEP 4, sections 4.1, 4.3).
`mixture_eos`	The density of a gas mixture at a pressure and temperature (OEP 4, section 7.4).
`mixture_validation`	The multi-fluid mixture models against the measured data (OEP 4, section 8; TC-778).
`models`	Dispersion models: published formulas and the models fitted to the curated data.
`molecular_ionisation_rates`	Strong-field ionisation rates of molecules.
`molecular_ionisation_validation`	The molecular rates against their references.
`nonlinear`	The second hyperpolarizability: a process-aware dispersion model and its fit.
`raman`	The Raman lines of the molecular gases, ready for a propagation code (TC-439).
`raman_response`	The Raman response function of a molecular gas or a gas mixture (TC-685 to TC-690).
`raman_response_validation`	The gases' Raman responses against measurements (TC-690).
`reduction`	From a gas dataset's printed values to the per-particle polarizability.
`transport`	The dilute gases' transport properties: viscosity, heat capacity, molar mass.
`two_photon`	Two-photon ionisation of the noble gases: the continuum model (OEP 6, Phase 1).
`two_photon_bound`	The bound two-photon levels of the noble gases (OEP 6, Phase 2a: curation only).
`virial`	The refractivity virial coefficient of each gas, from the curated data.