.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "gallery/scattering/01_single_particle_amplitudes.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

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

        :ref:`Go to the end <sphx_glr_download_gallery_scattering_01_single_particle_amplitudes.py>`
        to download the full example code.

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

.. _sphx_glr_gallery_scattering_01_single_particle_amplitudes.py:


Single-particle scattering amplitudes
========================================

Evaluate the far-field amplitudes of a dielectric sphere and inspect its
scattering cross section. This example uses PackLab's optional PyMieSim
integration and does not require a packing configuration.

.. GENERATED FROM PYTHON SOURCE LINES 9-16

.. code-block:: Python


    import matplotlib.pyplot as plt
    import numpy as np

    from PackLab import scattering, ureg









.. GENERATED FROM PYTHON SOURCE LINES 17-19

Evaluate amplitude functions for two sphere diameters
-----------------------------------------------------

.. GENERATED FROM PYTHON SOURCE LINES 19-30

.. code-block:: Python


    diameters = np.array([150, 300]) * ureg.nanometer
    dataset = scattering.compute_scattering_amplitudes(
        wavelength=532 * ureg.nanometer,
        diameters=diameters,
        material=1.59,
        medium=1.33,
        phi=np.linspace(-90, 90, 181) * ureg.degree,
    )









.. GENERATED FROM PYTHON SOURCE LINES 31-33

Plot the polarisation-resolved amplitudes for one diameter
-----------------------------------------------------------

.. GENERATED FROM PYTHON SOURCE LINES 33-38

.. code-block:: Python


    figure = dataset[0].plot()
    _ = figure.suptitle("Amplitude functions for a 150 nm sphere")





.. image-sg:: /gallery/scattering/images/sphx_glr_01_single_particle_amplitudes_001.png
   :alt: Amplitude functions for a 150 nm sphere
   :srcset: /gallery/scattering/images/sphx_glr_01_single_particle_amplitudes_001.png
   :class: sphx-glr-single-img





.. GENERATED FROM PYTHON SOURCE LINES 39-41

Compare scattering cross sections across the diameter grid
-----------------------------------------------------------

.. GENERATED FROM PYTHON SOURCE LINES 41-56

.. code-block:: Python


    dataset.process()
    figure, axis = plt.subplots(figsize=(6, 4))
    _ = axis.plot(
        diameters.to("nanometer").magnitude,
        dataset.Csca.to("nanometer**2").magnitude,
        "o-",
    )
    _ = axis.set(
        xlabel="sphere diameter (nm)",
        ylabel=r"scattering cross section (nm$^2$)",
        title="Single-particle scattering cross section",
    )
    axis.grid(alpha=0.25)
    figure.tight_layout()



.. image-sg:: /gallery/scattering/images/sphx_glr_01_single_particle_amplitudes_002.png
   :alt: Single-particle scattering cross section
   :srcset: /gallery/scattering/images/sphx_glr_01_single_particle_amplitudes_002.png
   :class: sphx-glr-single-img






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

   **Total running time of the script:** (0 minutes 0.172 seconds)


.. _sphx_glr_download_gallery_scattering_01_single_particle_amplitudes.py:

.. only:: html

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

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

      :download:`Download Jupyter notebook: 01_single_particle_amplitudes.ipynb <01_single_particle_amplitudes.ipynb>`

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

      :download:`Download Python source code: 01_single_particle_amplitudes.py <01_single_particle_amplitudes.py>`

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

      :download:`Download zipped: 01_single_particle_amplitudes.zip <01_single_particle_amplitudes.zip>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_