In intermediate energy nucleus-nucleus collisions, neutron production at forward angles is observed to occur with a Gaussian shape that is centered near the beam energy and extends to energies well above that of the beam. This paper presents an abrasion-ablation model for making quantitative predictions of the neutron spectrum. To describe neutrons produced from the abrasion step of the reaction where the projectile and target overlap, we use the Glauber model and include effects of final-state interactions. We then use the prefragment mass distribution from abrasion with a statistical evaporation model to estimate the neutron spectrum resulting from ablation. Measurements of neutron production from Ne and Nb beams are compared with calculations, and good agreement is found.

中文翻译：

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重离子碰撞中中子产生的磨损消融模型。

在中间能核与核的碰撞中，观察到前向产生的中子产生高斯形状，其中心位于射束能量附近，并且延伸到远高于射束能量的能量。本文提出了一种磨损消融模型，用于对中子谱进行定量预测。为了描述从弹丸和目标重叠的反应磨损步骤产生的中子，我们使用了格劳伯模型，并包括了最终状态相互作用的影响。然后，我们将磨损前的碎片质量分布与统计蒸发模型一起使用，以估算由烧蚀产生的中子谱。将Ne和Nb束产生的中子的测量结果与计算结果进行了比较，发现了很好的一致性。