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The Characteristics of the Halo Neutron Preemission in the Fusion of ~(11)Li with Light Targets

机译：〜（11）Li与光靶聚变中晕中子的发射特征

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摘要

The main characteristics of the halo neutron preemission in the fusion of ~(11)Li nuclei with light targets are reviewed. The recent experiment with a new array detector aimed at investigating neutron pair preemission is described. The position distribution measurement confirms the preemission of the halo neutrons in a very narrow forward cone of ～9 msrad. A novel approach for cross-talk rejection is described. By means of this approach, the true n-n coincidence sample was obtained. In view of obtaining the n-n correlation function, the crucial problem of the denominator construction is thoroughly analyzed. It was found that the single-product denominator built by a random coupling of single detected neutrons followed by cross-talk rejection, exceeds by up to 70% the denominator constructed by the event-mixing technique. We consider this behavior of the single-product denominator together with the large fluctuations seen when represented in small steps of relative momentum q as experimental evidence for residual correlation of single detected halo neutrons.
机译：综述了〜（11）Li核与轻目标融合中晕中子预发射的主要特征。描述了旨在研究中子对预发射的新型阵列检测器的最新实验。位置分布测量结果证实了在〜9 msrad的非常窄的前锥中晕中子的预发射。描述了一种用于串扰抑制的新颖方法。通过这种方法，获得了真正的n-n重合样本。鉴于获得n-n相关函数，对分母构造的关键问题进行了全面分析。已经发现，通过单个检测到的中子的随机耦合然后被串扰抑制而建立的单产品分母，超过了事件混合技术所构建的分母的至多高达70％。我们认为这种单一产品分母的行为以及以相对动量q的小步幅表示时看到的大波动，可以作为单个检测到的晕中子残留相关性的实验证据。

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