Autoionization states of the positronium negative ion
in exponential cosine-screened Coulomb potentials |
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| Authors: | A Ghoshal and Y K Ho |
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| Institution: | (1) Department of Physics, Near East University, Nicosia, Mersin-10, North Cyprus, Turkey;(2) Department of Physics, Middle East Technical University, 06531 Ankara, Turkey; |
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| Abstract: | The 2s2 1Se2s^2~^1{\rm S}^e autoionization resonance states of the positronium negative ion (Ps-) in exponential cosine-screened Coulomb potentials (ECSCP) are investigated using stabilization method. Highly correlated
wave functions for Ps- are used to take into account the correlation effect of the charged particles. Results for resonance energies and widths
are reported for the screening parameter in the range 0.0-0.07 (in a0
-1), to the best our knowledge, for the first time in the literature. |
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| Keywords: | |
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