What would be a suitable method to determine the photon flux originating from a solar simulator? I think ferrioxalate actinometry does not work in solar wavelength region.
What about thermopile based power meter? It will measure integral power of your irradiation. Photon flux has to be calculated for each wavelength. Divide power over photon energy and you get amount of photons for each wavelength.
Thank you for all of your replies. So I should find a thermopile-based power meter to achieve this since we do not have such an apparatus. Do you have any opinion on which departments most likely use this apparatus ? Electrical engineering ?