Abstract
Time-dependent Boltzmann calculations of the electron energy distribution function in a laser excited sodium plasma have been performed. Such nonequilibrium plasmas are produced in alkali metal vapor by laser irradiation of the ns–np resonance line. The electrons in these plasmas are heated by superelastic collisions with atoms in the np state giving a distribution of electrons in energy that is characterized by a series of spikes at energies separated by the ns–np transition energy, 2.1 eV for sodium.
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