Abstract

The 3He+ 3He, 3H+ 3H, and 3He+ 3H systems are examined using the resonating-group method with a one-channel approximation. A two-body central potential which fits the low-energy nucleon-nucleon scattering data is used. The radii of the clusters are fixed according to experimental data. The result shows that the agreement between the calculated and experimental differential cross sections is good for the 3He+ 3He and 3H+ 3H systems but is only fair for the 3He+ 3H system. The calculated phase shifts are analysed with a one-level formula, and a number of P- and F-resonant levels in the compound nuclei 6He, 6Li and 6Be are found. The question about the existence of excited states below the 3He+ 3He, 3H+ 3H and 3He+ 3H thresholds has also been examined. Here, the result shows that many S- and D-levels do exist in these energy regions.

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