论文标题
超越龙的接受极限：$ \ mathrm {^6li（α，γ）^{10} b} $反应的情况
Beyond the acceptance limit of DRAGON: the case of the $\mathrm{^6Li(α,γ)^{10}B}$ reaction
论文作者
论文摘要
辐射捕获反应对我们对宇宙中元素的起源的理解起着关键作用。后坐力分离器提供了一种研究这些反应的有效方法，在运动学逆上，并利用放射性离子束的使用。然而，在研究反向运动学中辐射捕获反应的研究中的一个限制因素是产物核的动量扩散，这可能导致角度扩散大于分离剂的几何学接受。 Triumf的Dragon设施是一种多功能的后坐力分离器，旨在研究与$ \ Mathrm {a \ sim 10-30} $区域中与天体物理学相关的辐射捕获反应。在这项工作中，我们提出了第一次尝试与Dragon A反应一起研究的尝试，即$ \ mathrm {^6li（α，γ）^{10} b} $，为此，后坐力分布超过了龙的接受。我们的结果与文献价值保持良好的一致性，表明龙可以衡量天体物理上重要反应的共振强度，即使并非所有后坐力都进入分离器。
Radiative capture reactions play a pivotal role for our understanding of the origin of the elements in the cosmos. Recoil separators provide an effective way to study these reactions, in inverse kinematics, and take advantage of the use of radioactive ion beams. However, a limiting factor in the study of radiative capture reactions in inverse kinematics is the momentum spread of the product nuclei, which can result in an angular spread larger than the geometric acceptance of the separator. The DRAGON facility at TRIUMF is a versatile recoil separator, designed to study radiative capture reactions relevant to astrophysics in the $\mathrm{A \sim 10-30}$ region. In this work we present the first attempt to study with DRAGON a reaction, $\mathrm{^6Li(α,γ)^{10}B}$ , for which the recoil angular spread exceeds DRAGON's acceptance. Our result is in good agreement with the literature value, showing that DRAGON can measure resonance strengths of astrophysically important reactions even when not all the recoils enter the separator.
