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We study quadrupole and monopole core polarization using harmonic oscillatorwave functions but with different length parameters for the valence particle ascompared to the core. We use perturbation theory with a delta interaction. Theresults also hold for a density dependent delta interaction [1]. We study howthe amount of core polarization varies with the distance of the valenceparticle from the core

Core Polarization with Variable Oscillator Length Parameters for Valence Particles