Abstract
The 2s2 1Se autoionization resonance state of the hydrogen negative ion embedded in Debye plasmas is determined by calculating the density of resonance states using the stabilization method. The electron affinity of the hydrogen atom is also estimated for various Debye lengths. A screened Coulomb potential obtained from the Debye model is used to represent the interaction between the charged particles. A correlated wave function consisting of a generalized exponential expansion has been used to represent the correlation effect between the three charged particles. The screening effect is taken care of for all pairs of the charged particles. The calculated resonance energies and widths for various Debye parameters ranging from infinity to a small value along with the electron affinity are reported.
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