.. _sphx_glr_api_gallery_photochem_actinometry:

Chemical actinometry
----------------------

Measuring a light source's photon flux with the potassium ferrioxalate
chemical actinometer.


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    <div class="sphx-glr-thumbcontainer" tooltip="Every quantum yield needs the number of photons absorbed. Hatchard and Parker (1956) introduced potassium ferrioxalate as a sensitive chemical photon counter: light reduces Fe(III) to Fe(II) with a known quantum yield (about 1.21 at 365 nm), and the Fe(II) is measured by the red phenanthroline complex at 510 nm (~chemistrykit.photochem.ferrioxalate_fe2_moles). Dividing by the quantum yield and the irradiation time gives the lamp&#x27;s photon flux (~chemistrykit.photochem.ferrioxalate_photon_flux). Here synthetic readings from a series of irradiation times are converted back into the flux of a lamp of known output.">

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  .. image:: /api/gallery/photochem/actinometry/images/thumb/sphx_glr_plot_01_hatchard_parker_ferrioxalate_thumb.png
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  :doc:`/api/gallery/photochem/actinometry/plot_01_hatchard_parker_ferrioxalate`

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      <div class="sphx-glr-thumbnail-title">Hatchard and Parker's ferrioxalate actinometer: counting photons chemically</div>
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    </div>


.. toctree::
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   /api/gallery/photochem/actinometry/plot_01_hatchard_parker_ferrioxalate