Abstract
Percolation theory in conjunction with a cylindrically symmetric Thomas-Fermi model is introduced to calculate the ionization potential lowering in hot and dense plasmas. The bound-electron level shifts due to the interaction with the nearest neighbor are calculated by means of a cylindrically symmetric model. The critical energy for which a negative-energy electron wave function overlaps a macroscopic portion of the plasma is then computed by percolation-theory methods.
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