Abstract
In this chapter, we will show the importance of electronic excitation in deriving partition functions, their first and second derivatives, as well as the thermodynamic properties of single atomic species and of plasma mixture. Recent results obtained by using different cutoff criteria are discussed and compared with the so-called ground state method, i.e., by inserting in the electronic partition function only the ground electronic state of the atomic species. The results obtained by a self-consistent calculation of partition function, equilibrium composition and thermodynamic properties will be rationalized taking into account the qualitative considerations reported in Chap. 1.
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Notes
- 1.
z s = 0 for neutrals, \({z}_{e} = -1\) for electrons, z s = 1 for single ionized atoms and so on.
- 2.
This boundary condition is completely different from that one considered for the not confined atom, i.e., \(\mathcal{R}(r = \infty ) = 0\).
- 3.
Note that the preexponential term reports the calculated electron partition function to the counting of electronic levels from the ground state
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Capitelli, M., Colonna, G., D’Angola, A. (2012). Electronic Excitation and Thermodynamic Properties of Thermal Plasmas. In: Fundamental Aspects of Plasma Chemical Physics. Springer Series on Atomic, Optical, and Plasma Physics, vol 66. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-8182-0_8
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