从后向角准弹性散射导出的“势垒分布函数”的真正含义是什么
What does really mean the "barrier distribution function" derived from backward angle quasi-elastic scattering
摘要：
由重离子准弹性背散射导出的势垒分布，实际上提供了一种关于反应阈值分布的信息。对于轻核系统，这些分布非常接近，但对于重核系统（当原子核的相互作用变得越来越复杂，势垒可能完全消失时），它们可能会有很大的不同。同样的情况也适用于弱结合的富中子射弹，对于这种射弹，中子转移和分裂反应通道在近势垒能量处起着重要作用。这不是一个术语问题，而是重要的发现，因为计划在几个实验室进行测量后向角准弹性散射的实验，以导出重核系统（可能用于生产超重元素）的“势垒分布”。
英文摘要：
The so called "barrier distribution" derived from quasi-elastic backscattering of heavy ions gives us, in fact, an information about the "reaction threshold distribution". For light nuclear systems these distributions are quite close, but for heavy ones (when interaction of nuclei becomes more and more complicated and the potential barrier can disappear at all) they may significantly differ. The same should hold also for weakly bound neutron rich projectiles, for which the neutron transfer and break-up reaction channels play an important role at near-barrier energies. This is not a terminology problem but important finding, because experiments on measurement of the backward angle quasi-elastic scattering for deriving the "barrier distributions" for heavy nuclear systems (which may be used for the production of superheavy elements) are planned to be performed in several laboratories.
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