petitRADTRANS.opacities.cia
===========================

.. py:module:: petitRADTRANS.opacities.cia


Attributes
----------

.. autoapisummary::

   petitRADTRANS.opacities.cia._INV_LOSCHMIDT_SQUARED
   petitRADTRANS.opacities.cia._CIA_OPACITY_CUTOFF


Functions
---------

.. autoapisummary::

   petitRADTRANS.opacities.cia.get_cia_aliases
   petitRADTRANS.opacities.cia.init_cia_loaded_opacities
   petitRADTRANS.opacities.cia.get_cia_contributors
   petitRADTRANS.opacities.cia.compute_cia_opacities
   petitRADTRANS.opacities.cia.interpolate_cia


Module Contents
---------------

.. py:data:: _INV_LOSCHMIDT_SQUARED

.. py:data:: _CIA_OPACITY_CUTOFF

.. py:function:: get_cia_aliases(name: str) -> str

.. py:function:: init_cia_loaded_opacities(cia_contributors)

.. py:function:: get_cia_contributors(gas_continuum_contributors)

.. py:function:: compute_cia_opacities(cia_dicts, mass_fractions, pressures, temperatures, frequencies, mean_molar_masses)

   Wrapper to interpolate_cia, calculating each collision's combined mass fraction.


.. py:function:: interpolate_cia(collision_dict, combined_mass_fractions, pressures, temperatures, frequencies, mean_molar_masses)

   Interpolate CIA cross-sections onto the Radtrans (wavelength, temperature) grid and convert it into
   opacities.

   Args:
       combined_mass_fractions: combined mass fractions of the colliding species
           e.g., for H2-He and an atmosphere with H2 and He MMR of respectively 0.74 and 0.24,
           combined_mas_fractions = 0.74 * 0.24
           combined_mas_fractions is divided by the combined weight (e.g. for H2 and He, 2 * 4 AMU^2), so there is
           no units issue.

   Returns:
       A (wavelength, temperature) array containing the CIA opacities.