MRI: Development of the SABRE Silicon Array for Branching Ratio Experiments

MRI：开发用于分支比实验的 SABRE 硅阵列

基本信息

批准号：
2117687
负责人：
Daniel Bardayan
金额：
$ 50.53万
依托单位：
University of Notre Dame
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-09-01 至 2024-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2117687&HistoricalAwards=false
关键词：
MRI Development SABRE Silicon Array

项目摘要

Two of the most compelling questions in science are: how were the elements created and how are they continuing to be synthesized today. Understanding the origins of the elements explains the origins of Earth. Exotic nuclei are often created in the astrophysical cauldrons of explosive alchemy, and the probabilities that these newly synthesized nuclei can retain the charged particles that created them determines whether heavier nuclei can be formed in the process. The origin of the elements is ultimately tied to this competition between particle emission and absorption. This MRI development award will provide funds to build SABRE (Silicon Array for Branching Ratio Experiments) that will be combined with the unique TriSol facility at the Notre Dame Nuclear Science Lab (NSL) – and that new instrumentation will be used to measure particle-emission probabilities for nuclei critical to explosive nucleosynthesis.Proton and alpha-induced reactions on exotic nuclei dominate the heavy-element nucleosynthesis in explosive environments such as novae, supernovae, and X-ray bursts. The new SABRE array in the TriSol facility at NSL will allow scientists to measure proton and α branching ratios as small as 10e−5. The key feature of this spectrometer is that it will allow experimenters to select specific reaction products that identify individual states of the resulting nucleus in a spectrum that is essentially background free. That capability is what will allow the group to measure such low branching ratios and have significant impacts on understanding capture reactions at stellar temperatures. A prime example is the 15O(α, γ)19Ne reaction because of its key importance in triggering heavy element nucleosynthesis via the rapid proton-capture process.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

科学中最引人注目的两个问题是：如何创建元素以及如何继续合成它们。了解元素的起源解释了地球的起源。外来的核通常是在爆炸性炼金术的天体物理大锅中产生的，而这些新合成的核可以保留产生的带电颗粒的可能性，这些颗粒可以确定它们是否可以在此过程中形成较重的核。元素的起源最终与粒子排放和滥用之间的竞争有关。 This MRI development award will provide funds to build SABRE (Silicon Array for Branching Ratio Experiments) that will be combined with the unique TriSol facility at the Notre Dame Nuclear Science Lab (NSL) – and that new instrumentation will be used to measure particle-emission possibilities for nuclear critical to explosive nuclear osynthesis.Proton and alpha-induced reactions on exotic nuclear dominate the heavy-element nuclear osynthesis in Novae，Supernovae和X射线爆发等爆炸性环境。 NSL的Trisol设施中的新军刀阵列将使科学家能够测量质子和α分支比小至10E -5。该光谱仪的关键特征是，它将允许实验者选择特定的反应产物，以识别基本无背景的光谱中所得核的个体状态。该能力将使该小组能够测量如此低的分支比率，并对理解恒星温度下的捕获反应产生重大影响。一个主要的例子是15o（α，γ）19NE反应，因为它在通过快速质子捕获过程触发重元素核合成的关键上是重要的。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子和更广泛影响的审查标准来通过评估来通过评估来获得的支持。

项目成果

期刊论文数量（4）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Experiments probing clustering effects in explosive nucleosynthesis

探索爆炸性核合成中聚类效应的实验

DOI：
10.3389/fphy.2023.1123868
发表时间：
2023
期刊：
Frontiers in Physics
影响因子：
3.1
作者：
Bardayan, D. W.
通讯作者：
Bardayan, D. W.

Nuclear physics with TriSol at Notre Dame’s Nuclear Science Laboratory

圣母大学核科学实验室的 TriSol 核物理

DOI：
10.1016/j.nimb.2023.05.006
发表时间：
2023
期刊：
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
影响因子：
0
作者：
Ahn, T.;Bardayan, D.W.;Blankstein, D.;Boomershine, C.;Brodeur, M.;Carmichael, S.;Coil, S.;Kolata, J.J.;O’Malley, P.D.;Porter, W.
通讯作者：
Porter, W.

TriSol: A major upgrade of the TwinSol RNB facility

TriSol：TwinSol RNB 设施的重大升级