We present a microscopic study on the fusion reactions ${}^{14,15}\mathrm{C}+{}^{232}\mathrm{Th}$ by emphasizing the effect of deformed halo structure on reaction dynamics within the framework of time-dependent density functional theory. The internuclear potentials are obtained by using the density-constraint frozen Hartree-Fock approach and then are adopted to calculate the fusion cross sections of ${}^{14,15}\mathrm{C}+{}^{232}\mathrm{Th}$, taking all the orientations of deformed reactants into account. Our microscopic calculations not only reproduce the enhancement of fusion cross sections at sub-barrier energies without any adjustable parameters, but also reveal the underlying mechanism of this enhancement, which is driven by the deformed halo structure of ${}^{15}\mathrm{C}$. More interestingly, by performing particle number projection based on the wave functions from time-dependent Hartree-Fock simulation, we find that the one-neutron transfer probabilities are more sensitive to the orientations of ${}^{15}\mathrm{C}$ than ${}^{232}\mathrm{Th}$, indicating the notable effects of halo structure on the reaction dynamics.

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• Nuclear density functional theory
• Nuclear reactions
• Unstable nuclei induced nuclear reactions