~ 7 Li在~（93）Nb上弱束缚的抛射体向非束缚态的探测转移
Probing transfer to unbound states of the ejectile with weakly bound 7Li on 93Nb
摘要：
通过测量$^7$ Li+ $^{93}$ Nb系统在接近库仑势垒的能量下的喷射连续体中的反应通道填充状态的一组相当完整的排他性数据，探索了转移然后分裂的两步过程。发现一次质子拾取的$α+α$事件的截面小于一次中子剥离的$α+d$事件和$^7$ Li直接分裂的$α+t$事件的截面。耦合通道玻恩近似和连续离散耦合通道计算很好地描述了数据，并支持的结论，$α+d$和$α+α$事件产生的直接转移到未结合状态的喷射物。
英文摘要：
The two-step process of transfer followed by breakup is explored by measuring a rather complete set of exclusive data for reaction channels populating states in the ejectile continua of the $^7$Li+$^{93}$Nb system at energies close to the Coulomb barrier. The cross sections for $α+α$ events from one proton pickup were found to be smaller than those for $α+d$ events from one neutron stripping and $α+t$ events from direct breakup of $^7$Li. Coupled channels Born approximation and continuum discretized coupled channels calculations describe the data well and support the conclusion that the $α+d$ and $α+α$ events are produced by direct transfer to unbound states of the ejectile.
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