[en] The gross structure appeared in the total fusion cross section for ¹⁶O + ¹²C system is studied by using the LCNO theory and the folding model of the parity dependent potential. The experimental data of the fusion cross section, elastic scattering excitation functions and angular distributions for this system are well explained

[en] Based on the potential resonance in heavy-ion collisions and on the optical model, the gross resonant structure appeared in the complete fusion excitation function and the phenomenon of the backward-angle oscillatory rise in the elastic scattering angular distribution for ¹⁶O + ²⁴Mg system are studied by using a deep optical potential. The calculated results of the optical model are compared with those of the nuclear molecular orbital model. The origin of the gross resonant structure is discussed

[en] Short communication

[en] The oscillatory structure appeared in the differential cross section of the reaction for ¹⁶O(¹⁶O, ¹²C)²⁰Ne may be explained by particle transfer from covalent channel to ionic channel in the nuclear molecular orbital theory

[en] The mechanism of transfering a cluster of nucleons between two colliding nuclei is considered to explain the backward angle oscillatory rise in the differential cross section of the elastic scattering between certain nuclei, such as ¹⁶O + ²⁴Mg or ²⁰Ne + ²⁴Mg. The nuclear molecular orbit approximation theory is applied. For one-step transfer, if the parameter involved is assumed to be adjustable, the numerical calculations can be made to fit the experimental results naturally

[en] A parity-dependent potential for the ¹⁶O+²⁰Ne system has been derived using the linear combination of nuclear orbitals (LCNO) model. This potential agrees in both sign and order of magnitude with the phenomenological parity-dependent potential derived previously for this system. The α-clustering of ²⁰Ne (g.s.) is shown to have a strong effect on the range of the parity-dependent potential. (orig.)

[en] In the differential cross sections for the elastic scattering between an α-conjugate target and projectile, a rising oscillatory structure is often observed in the backward-angle region. An α-transfer mechanism is proposed to explain this anomalous phenomenon. A nuclear molecular-orbit approximation theory for both 1α- and 2α-transfer processes has been formulated and applied to ¹⁶O+²⁰Ne and ¹²C+²⁰Ne scattering systems with different projectile energies. The experimental rising structures shown in these scatterings are well reproduced with parameters fairly consistent with spectroscopic data. An independent-α-particle model wave function has been used for the evaluation of the exchange potential, which gives better agreement with experiment than the Buttle-Goldfarb approximation can usually provide. (orig.)

[en] A phenomenological parity-dependent potential has been obtained for analysing resonant structure in the ¹⁶O+²⁰Ne system with a deep optical potential and is compared with the potential from the linear combination of nuclear orbital model. This potential agrees in both sign and magnitude in the tail region with the calculation, and the former is roughly an envelope curve of the latter. (orig.)

[en] The basic features exhibited by ²⁰Ne + ¹²C system are analyzed and the excitation functions and the angular distributions of the ²⁰Ne + ¹²C elastic scattering are well reproduced on the basis of the nuclear molecular orbital theory. The results show that the double-alpha transfer effect for a deep optical potential is responsible for the above difference in the elastic scattering excitation functions between these two systems

[en] Resonant structures appeared in the excitation functions for the ¹⁶O + ²⁰Ne elastic scattering have been studied by the nuclear molecular orbital theory. The theoretical results agree will with the experimental data