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

.. only:: html

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

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

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

.. _sphx_glr_auto_examples_plot_convergence.py:


Probe convergence: spots to disks
=================================

The same gold particle in diffraction as the probe converges. Parallel illumination gives
spots; nano-beam diffraction gives disks whose radius is the convergence angle; convergent
beam disks grow until they overlap.

.. GENERATED FROM PYTHON SOURCE LINES 9-33



.. image-sg:: /auto_examples/images/sphx_glr_plot_convergence_001.png
   :alt: TEM, 0.08 mrad, NBD, 1 mrad, NBD, 3 mrad, CBD, 8 mrad
   :srcset: /auto_examples/images/sphx_glr_plot_convergence_001.png
   :class: sphx-glr-single-img





.. code-block:: Python


    import matplotlib.pyplot as plt
    import numpy as np

    from de_twin import DigitalTwin, ManualClock
    from de_twin.state import ProbeMode, Projection

    twin = DigitalTwin("Dense Au on holey C", camera="DESim", clock=ManualClock(), seed=3)
    twin.column.set("Magnification", 150000)
    feature = twin.specimen.features()[0]
    twin.column.move_stage(x=-feature.center_um[0], y=-feature.center_um[1])
    twin.column.set_projection(Projection.DIFFRACTION)

    probes = [(ProbeMode.TEM, 3), (ProbeMode.NBD, 1), (ProbeMode.NBD, 4), (ProbeMode.CBD, 2)]
    fig, axes = plt.subplots(1, 4, figsize=(12, 3.4))
    for ax, (mode, alpha) in zip(axes, probes):
        twin.column.set_probe_mode(mode)
        twin.column.set_alpha_selector(alpha)
        dp = np.log1p(twin.flux(twin.request()))
        ax.imshow(dp, cmap="gray", vmin=np.percentile(dp, 1), vmax=np.percentile(dp, 99.95))
        ax.set_title(f"{mode.name}, {twin.optics(twin.request()).convergence_mrad:.2g} mrad", fontsize=9)
        ax.axis("off")
    fig.tight_layout()
    plt.show()


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

   **Total running time of the script:** (0 minutes 1.536 seconds)


.. _sphx_glr_download_auto_examples_plot_convergence.py:

.. only:: html

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

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

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

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

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

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

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


.. only:: html

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

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