Abstract

We study the effect of higher-order processes in Coulomb dissociation of 11Li by numerically solving the three-dimensional time-dependent Schrödinger equation for the relative motion of a di-neutron and the 9Li core. Comparisons are made to first-order perturbation theory and to measurements. The calculated Coulomb reacceleration effects improve the agreement with experiment, but some discrepancy remains. The effects are smaller in the dissociation of 11Be, and they decrease with increasing beam energy.

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