Abstract
The mechanism of quasilocalization of many-centre one-electron resonant states is examined by studying a point scatterer system. The main effect is a wavefunction suppression in the vicinity of the many-centre system as a result of the destructive interference of waves from various centres. For small systems the suppression can be described by centrifugal barriers in the scattering L channels. At low energies one can pick out one decay channel from all channels. The time of the electron delay in a scattering system is related to the penetrability of the centrifugal barrier in the decay channel and the probability of the electron occurrence in that channel within the system.
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