Elementary Processes Giving Rise to Spectra
In this chapter, the most important elementary processes responsible for the excitation and ionization of atoms and ions are listed, and their relative role in various plasmas is briefly discussed. Throughout this book, Z is the nuclear charge, Z is the ion charge, and z is the charge of atomic core, i.e., the charge of the atom or ion without the optical electron. For a neutral atom z = 1; for a singly ionized atom, z = 2, and so on. An ion with charge Z = z − 1 will be denoted X z . We shall usually use the word “atom” to mean both the neutral atom with z = 1 and ions with z > 1. As a rule plasma is supposed to be optically thin.
KeywordsRadiative Ionization Elementary Process Neutral Atom Radiative Decay Ionization Cross Section
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- 1.1I.I. Sobel’man: Atomic Spectra and Radiative Transitions, 2nd edn., Springer Ser. Atoms Plasmas, Vol.12 (Springer, Berlin, Heidelberg 1992); 1st edn., Springer Ser. Chem. Phys., Vol.1 (Springer, Berlin, Heidelberg 1979)Google Scholar
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