Nuclear structure studies of radioactive nuclei via Coulomb excitation reactions with a large acceptance Bragg detector at an ISOL facility

在 ISOL 设施中使用大接受度布拉格探测器通过库仑激发反应研究放射性核的核结构

基本信息

批准号：
EP/D035163/1
负责人：
Charles Barton
金额：
$ 15.99万
依托单位：
University of York
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2006
资助国家：
英国
起止时间：
2006 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FD035163%2F1
关键词：
Nuclear structure studies radioactive nuclei

项目摘要

Nuclear structure physicists study the shape and excitation modes of the atomic nucleus in order to understand the nuclear force. The atomic nucleus can be spherical or it can be deformed, like a Frisbee or a rugby ball. Once the nucleus is deformed, it can also rotate or vibrate. Measuring the deformation and excitation modes allow us to better understand the nuclear force and why protons and neutrons are bound in the nucleus. The strong nuclear force cannot be derived from our understanding of quarks, the constituent components of protons and neutrons, but is instead obtained from experimental data. This derivation of the nuclear force works well and helps us understand known nuclei that are stable as well as many that are radioactive. We also use it to predict the behaviour of nuclei far from stability. Newly built accelerator facilities that have radioactive nuclear beams are allowing nuclei far from stability to be studied for the first time, such as ISOLDE at CERN. Recent experiments show that the structure of some nuclei is not always the expected structure. These results, and perhaps further discoveries, will help us better understand the nuclear force. To measure the shape of the nucleus, we give it additional energy and observe the way it returns to the ground state. From this decay we deduce excitation modes, determine the amount of deformation, and compare the results to what various nuclear models predict. How do we excite the atomic nucleus and determine the structure from an experiment in this proposed research? We will use a reaction that depends purely on the electromagnetic force. This is very well understood force and makes the analysis of the experimental data simple. We will accelerate the radioactive nucleus we want to study and have it pass through a thin target material of stable nuclei. As the beam of radioactive nuclei pass through the target material, some will get very close to some of the target nuclei. This proximity generates a ver

核结构物理学家研究了原子核的形状和激发模式，以了解核力量。原子核可以是球形的，也可以变形，例如飞盘或橄榄球球。一旦细胞核变形，它也会旋转或振动。测量变形和激发模式使我们能够更好地理解核力以及质子和中子为何结合在细胞核中。强大的核力量不能源自我们对夸克，质子和中子的组成部分的理解，而是从实验数据中获得的。核力量的这种推导效果很好，并帮助我们了解稳定的已知核以及许多放射性的核。我们还使用它来预测核的行为远非稳定性。具有放射性核管的新建造的加速器设施使核允许首次远离稳定性的核，例如CERN的Isolde。最近的实验表明，某些核的结构并不总是预期的结构。这些结果以及可能进一步的发现将有助于我们更好地理解核力量。为了测量细胞核的形状，我们提供了额外的能量，并观察其返回基态的方式。从这个衰减中，我们推断出激发模式，确定变形量，并将结果与各种核模型预测的结果进行比较。在这项提出的研究中，我们如何激发原子核并确定实验的结构？我们将使用纯粹取决于电磁力的反应。这是非常了解的力，使对实验数据的分析变得简单。我们将加速我们要研究的放射性核，并通过稳定核的薄靶物质通过。随着放射性核的光束通过目标材料，有些将非常接近某些目标核。此接近产生一个ver