Study Of Low Energy Nuclear Reactions In Late Stellar Evolution

恒星演化晚期低能核反应研究

• 批准号: 9803757
• 负责人: Michael Wiescher
• 金额: $ 28.71万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-05-01 至 2002-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9803757&HistoricalAwards=false
• 关键词: Study; Low; Energy; Nuclear; Reactions

***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.***

* 9803757 Wiescher该计划的主要目标是质子和α诱导反应的实验研究，这对于理解恒星演化后期氢和氦壳燃烧中的核合成非常重要。 建议的测量是必要的，更好地了解在中等质量的渐近巨星分支（AGB）星的核合成。 AGB星可以通过驱逐外层形成行星状星云，因此对星际和陨石物质的丰度有很大的贡献。 拟议中的实验将在圣母大学新安装的KN（和JN）货车德格拉夫加速器设施进行，主要使用低能质子和α束。 对于一些拟议的实验将使用逆运动学技术。 可用的能量范围对应于恒星演化后期的伽莫夫燃烧范围。