Study Of Low Energy Nuclear Reactions In Late Stellar Evolution

*9803757 Wiescher这项提议的主要目标是对质子和阿尔法诱导的反应进行实验研究，这对于理解恒星演化后期氢和氦壳层燃烧中的核合成非常重要。为了更好地理解中等质量渐近巨星(AGB)的核合成，所提出的测量是必要的。AGB恒星可以通过抛出外包层形成行星状星云，因此对星际和流星物质中观察到的丰度有很大贡献。拟议的实验将在圣母大学新安装的KN(和JN)Van de Graaff加速器设施中进行，主要使用低能质子和阿尔法束。对于一些拟议的实验，将使用反向运动学技术。可用的能量范围与恒星演化后期的伽莫燃烧范围相对应。*

***9803757WiescherMain goal of this proposal is the experimental study of proton and alpha induced reactions important for the understanding of nucleosynthesis in hydrogen and helium shell burning during the late stages of stellar evolution. The proposed measurements are necessary for a better understanding of nucleosynthesis in intermediate mass asymptotic giant branch (AGB) stars. AGB stars can form planetary nebula by expulsion of the outer envelope and contribute therefore strongly to the abundances observed in interstellar and meteoritic material. The proposed experiments will be performed at the newly installed KN (and JN) Van de Graaff accelerator facility at the University of Notre Dame using primarily low energy proton and alpha beams. For some of the proposed experiments inverse kinematic techniques will be used. The energy range available corresponds to the Gamow range of burning in late stellar evolution.***