I want to use the spectral lines of Fe I in the range of 343 to 442 nm for electron excitation temperature calculation via Boltzmann plot method. The calculation parameters of these lines can be found on NIST (http://physics.nist.gov/PhysRefData/ASD/lines_form.html).
But the problem is, how to identify and distinguish the numerous spectral lines of Fe I? Because the spectral lines are so close to each other and also sometimes there are two transition at one wavelengh.
Additionally, which lines should I choose? Are there any criteria for the choice?
the NIST database also includes line intensities and information if the lines are observed experimentally. this normally helps to judge which of the lines you actually see.
the more lines you include in the Boltzmann plot the more accurate wil the result be. they should correspond to sufficiently different energy to make sure that the plot is sufficiently temperature sensitive
I agree with the response and comments given by Johannes Kiefer. Please look at the NIST database and take into account the relative intensities of the lines/multiplets in the line identification. Be carefull in the computation by using the temperature and related excitation potentials.
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