论文标题
一种与天体物理学相关的能量的（p，n）反应研究的技术
A technique for the study of (p,n) reactions with unstable isotopes at energies relevant to astrophysics
论文作者
论文摘要
我们已经开发并测试了一种实验技术，用于测量与核天体物理学相关运动学的低能（P，N）反应。拟议的设置位于国家超导汽车实验室的REA3设施。在当前方法中，我们将REA3中的Beam-Transport线作为后坐力分离器操作，同时将（P，n）反应与低能中子中子检测器阵列（Lenda）标记为传出中子。通过使用$^{40} $ ar（p，n）$^{40} $ k反应作为探针来验证开发的技术。 $^{40} $ ar梁的原理证明实验的结果表明，不确定性$ \ sim $ 25 \％的横截面测量值可行，计数速率高达7个计数/mb/pna/s。在本文中，我们详细描述了实验设置，并介绍了测试实验的分析方法和结果。还讨论了与分离器进行实验中使用该技术进行捕获反应（SECAR）的未来计划。
We have developed and tested an experimental technique for the measurement of low-energy (p,n) reactions in inverse kinematics relevant to nuclear astrophysics. The proposed setup is located at the ReA3 facility at the National Superconducting Cyclotron Laboratory. In the current approach, we operate the beam-transport line in ReA3 as a recoil separator while tagging the outgoing neutrons from the (p,n) reactions with the low-energy neutron detector array (LENDA). The developed technique was verified by using the $^{40}$Ar(p,n)$^{40}$K reaction as a probe. The results of the proof-of-principle experiment with the $^{40}$Ar beam show that cross-section measurements within an uncertainty of $\sim$25\% are feasible with count rates up to 7 counts/mb/pnA/s. In this article, we give a detailed description of the experimental setup, and present the analysis method and results from the test experiment. Future plans on using the technique in experiments with the separator for capture reactions (SECAR) that is currently being commissioned are also discussed.
