Shape resonance is a phenomenon that occurs in quantum mechanics, particularly in the study of scattering processes. It refers to a temporary trapping of wave function density in a potential well created by the shape of a potential barrier. When particles (such as electrons or nuclei) interact with this potential, certain conditions can lead to an increased likelihood of scattering at specific energies. In a more detailed context, shape resonance happens when the incoming quantum particle has an energy that allows it to temporarily occupy a quasi-bound state.
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