科研之友
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摘要
Experimental reaction cross sections for He-6 and He-4 projectiles are reduced and are shown to follow well-defined trajectories that can be characterized by respective Wong- type curves. The strong enhancement observed for the He-6 data is interpreted as caused by two separate halo effects: a size effect, which affects the whole energy region, and a dynamic effect, important only near and below the barrier. Evidence for a core-halo decoupling is presented for the He-6 + Zn-64 system, which further supports the hypothesis that the decoupling is a characteristic feature of true halo systems.
- 出版日期2011-2-28
