Quasi-molecular states of neutrons in dinuclear systems and their effect on fusion of heavy atomic nuclei |
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Authors: | V I Zagrebaev V V Samarin |
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Institution: | (1) Joint Institute for Nuclear Research, ul. Zholio-Kyuri 6, Dubna, Moscow oblast, 141980, Russia;(2) Moscow State Open University (Cheboksary branch), Cheboksary, 428000, Russia |
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Abstract: | The evolution of the wave functions of valence neutrons upon collisions of heavy nuclei having energies near the Coulomb barrier has been investigated by numerical solution of the multidimensional time-dependent Schrödinger equation. It is shown that even before overcoming the barrier by nuclei the wave functions of valence neutrons are extended to their volumes with occupation of quasi-molecular states. This process results in a significant effect of neutron transfers on nuclear fusion and, in particular, in a significant increase in the probability of subbarrier fusion for certain combinations of nuclei. |
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