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Edinburgh Nuclear Physics Group Consolidated Grant Proposal

爱丁堡核物理小组综合赠款提案

基本信息

批准号：
ST/P004008/1
负责人：
Philip J Woods
金额：
$ 219.36万
依托单位：
University of Edinburgh
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FP004008%2F1
关键词：
Edinburgh Nuclear Physics Group Consolidated

项目摘要

The research programme aims at understanding the processes that forge the elements in stars and the big bang and obtaining a deeper understanding of nuclear matter. This requires remarkable experiments underground that let us study reactions at the very low energies occurring in stars such as the sun, and with beams of radioactive nuclei to understand the reactions that take place in explosive events such as supernovae which occur at higher temperatures and involve unstable isotopes. The astrophysical origin of the elements heavier than iron remains a particular mystery - they may for example be produced in thermally pulsing stars, supernovae and merging neutron stars. Fusion reactions with neutrons play a vital role in producing these elements but we do not understand these reactions, and the properties of radioactive isotopes produced by them, well enough. We will study reactions with neutron beams and study the properties of highly neutron-rich nuclei existing very far from stability. The nature of matter in neutron stars themselves remains a mystery. These are like large nuclei but bound by the gravitational force rather than the strong force. We will perform measurements of the neutron skin which forms on the surface of nuclei with intense high energy photon beams. The neutron skin is a mini laboratory for neutron star matter and by accurately measuring its properties we can access new information on neutron star structure and cooling mechanisms. The nature of matter inside neutron star cores is a great mystery, and it has been suggested that matter containing strange quarks may be present - a remarkable hypothesis. Our experiments will test the nature of nuclear matter for the conditions found in neutron stars. There is evidence that quarks can exist as a group of 6, a hexaquark, and may even be present inside neutron stars and influence their properties. This is not something found in textbooks but the theory of the strong force, quantum chromo dynamics, allows this exotic possibility. We will perform experiments to provide stronger evidence for the existence of the hexaquark and probe its properties.

该研究方案旨在了解恒星和大爆炸中形成元素的过程，并加深对核物质的了解。这就需要在地下进行非凡的实验，让我们研究在太阳等恒星中发生的非常低能量的反应，并使用放射性核束来了解在爆炸事件中发生的反应，如超新星，发生在较高温度下，涉及不稳定的同位素。比铁重的元素的天体物理起源仍然是一个特别的谜-它们可能是在热脉冲星，超新星和合并中子星中产生的。与中子的聚变反应在产生这些元素中起着至关重要的作用，但我们对这些反应以及由它们产生的放射性同位素的性质还不够了解。我们将研究与中子束的反应，并研究离稳定性很远的高丰中子核的性质。中子星本身的物质性质仍然是一个谜。它们就像大的原子核，但受到引力而不是强力的束缚。我们将对高能光子束在原子核表面形成的中子皮进行测量。中子皮是中子星星物质的微型实验室，通过精确测量其性质，我们可以获得关于中子星星结构和冷却机制的新信息。中子星星核内物质的性质是一个巨大的谜团，有人提出可能存在含有奇异夸克的物质--这是一个了不起的假设。我们的实验将测试中子星中发现的核物质的性质。有证据表明，夸克可以作为一个6夸克群存在，甚至可能存在于中子星内部并影响它们的性质。这在教科书中是找不到的，但是强力理论，量子染色体动力学，允许这种奇异的可能性。我们将进行实验，为六夸克的存在提供更有力的证据，并探索其性质。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Dibaryons and where to find them

Dibaryons 以及在哪里可以找到它们

DOI：
10.1088/1361-6471/ad27e6
发表时间：
2024
期刊：
Nuclear and Particle Physics
影响因子：
0
作者：
Bashkanov M
通讯作者：
Bashkanov M

Mass Measurements of Neutron-Deficient Yb Isotopes and Nuclear Structure at the Extreme Proton-Rich Side of the N = 82 Shell

N = 82 壳层极端富质子侧的缺中子镱同位素和核结构的质量测量

DOI：
10.15120/gsi-2022-00123
发表时间：
2021
期刊：
影响因子：
0
作者：
Beck S
通讯作者：
Beck S

Underground Measurements of Nuclear Reaction Cross-Sections Relevant to AGB Stars

与 AGB 恒星相关的核反应截面的地下测量

DOI：
10.3390/universe8010004
发表时间：
2021
期刊：
Universe
影响因子：
2.9
作者：
Ananna C
通讯作者：
Ananna C

Measurement of Compton Scattering at MAMI for the Extraction of the Electric and Magnetic Polarizabilities of the Proton

测量 MAMI 的康普顿散射以提取质子的电和磁极化率

DOI：
10.1103/physrevlett.128.132503
发表时间：
2022
期刊：
Physical Review Letters
影响因子：
8.6
作者：
Mornacchi, E.;Martel, P. P.;Abt, S.;Achenbach, P.;Adlarson, P.;Afzal, F.;Ahmed, Z.;Annand, J. R. M.;Arends, H. J.;Bashkanov, M.
通讯作者：
Bashkanov, M.

Decay properties of the $d^*(2380)$ hexaquark multiplet

$d^*(2380)$六夸克多重态的衰变性质