Nuclear structure and nuclear astrophysics at the ISAC-II facility

ISAC-II 设施的核结构和核天体物理学

• 批准号: EP/D060575/1
• 负责人: Brian Fulton
• 金额: $ 75.98万
• 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%2FD060575%2F1
• 关键词: Nuclear; structure; nuclear; astrophysics; ISAC

The atomic nucleus is a fascinating system, made up of tiny particles called neutrons and protons. The motion of the neutrons and protons are governed by quantum mechanics and they are held together by a subtle interplay between three of the fundamental forces in Nature, which makes the nucleus unlike any other system we know (and at the same time very hard to understand). Although we know that something like 7,000 different nuclei exist, each having a different number of neutrons and protons, Nature has made it very difficult for us to study these, because only around 300 of them are long lived enough to be found here on Earth. That is not to say that the others can't be made, indeed Nature achieves this inside stars and in the spectacular explosive sites like novae and supernovae, but because they are radioactive they decay quickly. Here on Earth we can mimic Nature by producing these nuclei in collisions between a beam of fast moving nuclei which we produce with an accelerator and which we direct at a target where the beam nuclei collide with nuclei in the target. Recently, because of technological advances, we have developed the ability to not only to produce these radioactive nuclei, but to collect them and re-accelerate them before they decay. In this way we can create beams of radioactive nuclei and this is revolutionising nuclear physics by opening up the whole range of those 7,000 or so nuclei to study. Moreover, it also allows us to investigate one of the most exciting applications of nuclear physics, the study of the nuclear reactions which go on in such amazing astropysical objects as novae, x-ray bursters and supernovae. One of the problems with carrying out these studies is that the accelerated beams of radioactive nuclei are very weak. Hence we need to build very efficient instruments which can make the measurements we want. We are planning to build two new instruments which we will install at a new radioactive beam facility called ISAC-II, bas

原子核是一个迷人的系统，由称为中子和质子的微小粒子组成。中子和质子的运动受量子力学的支配，它们通过自然界中三种基本力之间的微妙相互作用而结合在一起，这使得原子核不同于我们所知道的任何其他系统（同时也很难理解）。虽然我们知道大约有7,000种不同的原子核存在，每个原子核都有不同数量的中子和质子，但大自然让我们很难研究这些原子核，因为只有大约300种原子核的寿命足够长，可以在地球上找到。这并不是说其他的不能被制造出来，事实上，大自然在恒星内部和壮观的爆炸场所，如新星和超新星，实现了这一点，但是因为它们具有放射性，它们很快就会衰变。在地球上，我们可以模仿自然，通过一束快速移动的原子核之间的碰撞来产生这些原子核，我们用加速器产生这些原子核，然后我们将它们对准一个目标，在那里，原子核束与目标中的原子核碰撞。最近，由于技术的进步，我们不仅有能力生产这些放射性核，而且有能力收集它们并在它们衰变之前重新加速它们。通过这种方式，我们可以创造出放射性原子核的光束，这是核物理学的一场革命，它开放了7,000个左右的原子核的整个范围供研究。此外，它还使我们能够研究核物理学最令人兴奋的应用之一，研究在新星，x射线爆发和超新星等令人惊叹的天体中进行的核反应。进行这些研究的问题之一是放射性核的加速束非常弱。因此，我们需要建立非常有效的仪器，可以进行我们想要的测量。我们计划建造两台新仪器，安装在一个新的放射性束设施ISAC-II上，

项目成果

Single-Particle Structure of Neutron-Rich Sr Isotopes Via d( 94,95,96 Sr, p) Reactions

通过 d( 94,95,96 Sr, p) 反应制备富中子 Sr 同位素的单粒子结构

• DOI: 10.48550/arxiv.1911.00670
• 发表时间: 2019
• 作者: Cruz S

Shape coexistence and mixing of low-lying 0+ states in 96Sr

• DOI: 10.1016/j.physletb.2018.09.031
• 发表时间: 2018-09
• 期刊: Physics Letters B
• 影响因子: 4.4
• 作者: S. Cruz;P. Bender;R. Krücken;K. Wimmer;F. Ames;C. Andreoiu;R. Austin;C. Bancroft;R. Braid;T. Bruhn;W. Catford;A. Cheeseman;A. Chester;D. Cross;C. Diget;T. Drake;A. Garnsworthy;G. Hackman;R. Kanungo;A. Knapton;W. Korten;K. Kuhn;J. Lassen;R. Laxdal;M. Marchetto;A. Matta;D. Miller;M. Moukaddam;N. Orr;N. Sachmpazidi;A. Sanetullaev;C. Svensson;N. Terpstra;C. Unsworth;P. Voss

Shell evolution approaching the N = 20 island of inversion: Structure of Mg 29

接近 N = 20 反转岛的壳演化：Mg 29 的结构

• DOI: 10.1103/physrevc.99.044320
• 发表时间: 2019
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: Matta A

Single-particle structure in neutron-rich Sr isotopes approaching the N = 60 shape transition

接近 N = 60 形状转变的富中子 Sr 同位素的单粒子结构

• DOI: 10.1103/physrevc.102.024335
• 发表时间: 2020
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: Cruz S

Simultaneous analysis of the elastic scattering and breakup channel for the reaction Li 11 + Pb 208 at energies near the Coulomb barrier

同时分析库仑势垒附近能量下 Li 11 Pb 208 反应的弹性散射和破碎通道

• DOI: 10.1103/physrevc.92.044608
• 发表时间: 2015
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: Fernández-García J