.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "auto_gallery/dispersion/plot_fit_ar.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_auto_gallery_dispersion_plot_fit_ar.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_auto_gallery_dispersion_plot_fit_ar.py:


Argon: the fitted model
=======================

The argon model (``fit/Ar``): the 104.8 nm and 106.7 nm resonance lines at their NIST
energies and two effective oscillators, with the magnetic susceptibility :math:`\chi_0
= -2.30\times10^{-4}` a.u. that makes the electric polarizability the refractive one.
The absolute level comes from Lesiuk & Jeziorski's ab initio Cauchy moments, the
dielectric static polarizability (Gaiser & Fellmuth, via Lesiuk) and Egan's
refractometry at 633 nm, which agree to a few 1e-5; the shape from 468 nm to 2.06 um
from Peck & Fisher, whose level is 3.5e-4 high and is fitted free; the vacuum
ultraviolet from Bideau-Mehu and Gordon. Squares are validators, not fitted: Zhang's
comb value at 800 nm (+2.6e-4), Birch at 633 nm, Borzsonyi, Rusch's infrared point, and
the Lyman-alpha values of Gill and Heddle.

Top: direct datasets against the fit, with the fit's one-sigma band. Configured data
use the fitter's conventions and uncertainties, with fitted scales removed; electric
data receive the magnetic term for this comparison. Middle: the published formulas,
the recorded ``luna_physdata`` fit and refractiveindex.info's entries against the
fit. Bottom: the fitted direct datasets' normalised residuals; the static dielectric
point agrees within one sigma. See :doc:`/fitting` for the panel definitions.

.. GENERATED FROM PYTHON SOURCE LINES 28-31



.. image-sg:: /auto_gallery/dispersion/images/sphx_glr_plot_fit_ar_001.svg
   :alt: Ar: fit Ar (reduced chi2 0.50)
   :srcset: /auto_gallery/dispersion/images/sphx_glr_plot_fit_ar_001.svg
   :class: sphx-glr-single-img





.. code-block:: Python

    from _helpers import fit_overview

    fig = fit_overview("Ar", xlim=(100e-9, 20e-6))


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 1.405 seconds)


.. _sphx_glr_download_auto_gallery_dispersion_plot_fit_ar.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: plot_fit_ar.ipynb <plot_fit_ar.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: plot_fit_ar.py <plot_fit_ar.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: plot_fit_ar.zip <plot_fit_ar.zip>`