Gamma-Ray Spectroscopy at the Isotope Separator and Accelerator (ISAC)

同位素分离器和加速器 (ISAC) 的伽马射线能谱分析

• 批准号: SAPPJ-2017-00026
• 负责人: Svensson, Carl
• 金额: $ 121.66万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Project
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=762591
• 关键词: Gamma; Ray; Spectroscopy; Isotope; Separator

The atoms of all elements are composed of electrons orbiting a tiny massive core, the atomic nucleus. The nucleus is, in turn, composed of smaller objects called protons and neutrons or, collectively, nucleons. These nucleons interact with each other by all of the known forces of nature, making the atomic nucleus an ideal "laboratory" for studying a wide range of topics of basic scientific interest, from the properties of the fundamental interactions of subatomic particles to how the nucleus as a whole behaves as a collective entity.The use of the atomic nucleus as a laboratory for basic science research has been constrained by the small subset of the possible combinations of protons and neutrons (isotopes) occurring naturally on Earth. A great expansion of this field of science is, however, being made possible by the development of research facilities such as the Isotope Separator and Accelerator (ISAC), and its new expansion to the Advanced Rare IsotopE Laboratory (ARIEL) at the TRIUMF facility in Vancouver, British Columbia. ISAC produces world-record intensities of short-lived isotopes and delivers them to research scientists in the form of high-quality ion beams. In the present research, the high-frequency light (gamma-rays), neutrons, and charged particles emitted when rare isotopes produced at ISAC decay or interact with other nuclei will be measured in state-of-the-art detector arrays known as GRIFFIN, TIGRESS, and SPICE, designed and constructed by a collaboration of researchers from Canadian universities and TRIUMF. These measurements will support a broad program of basic science research, ranging from precision measurements of the weak interactions of subatomic particles called quarks, through studies aimed at a better understanding of how the chemical elements are synthesized in the explosions of stars, to experiments designed to unravel how the atomic nucleus responds to the stresses of unusual neutron-to-proton ratios. The world leading combination of the ISAC facility, its upgrade to ARIEL, and the sophisticated detection systems employed in these studies, will ensure that Canadian scientists remain at the forefront of the emerging field of rare isotope research.

所有元素的原子都是由绕着微小核心核心原子核的电子组成的。 核反过来由称为质子和中子的较小物体组成，或者统称为核子。 这些核子通过所有已知的自然力量相互相互作用，使原子核成为研究基本科学兴趣的广泛主题的理想“实验室”，从亚原子颗粒的基本相互作用到整个核作为集体行为的整体行为的基本相互作用到对原子科学的群体的整体使用。和中子（同位素）自然出现在地球上。 然而，由于同位素分离器和加速器（ISAC）等研究设施的开发以及它在不列颠哥伦比亚省温哥华市Triumf设施的先进的稀有同位素实验室（ARIEL）的新扩展中，这一科学领域的大幅扩展是可能的。 ISAC产生了短暂同位素的世界纪录强度，并以高质量的离子束的形式进行研究科学家。 在本研究中，当在ISAC衰变或与其他核相互作用时，将在Canadian和Triumf的研究人员合作设计和构建时，将测量高频光（伽马射线），中子和带电的颗粒，当时是在ISAC衰变或与其他核互动的稀有同位素时，将在现有的探测器阵列中进行测量。 这些测量结果将支持一项广泛的基础科学研究计划，包括对称为夸克的弱相互作用的精确测量，旨在更好地了解在恒星爆炸中如何合成化学元素的研究，到旨在揭示原子核如何应对构成核心中心核心的压力的实验。 ISAC设施（升级到Ariel）以及这些研究中采用的复杂检测系统的世界领先组合将确保加拿大科学家在稀有同位素研究的新兴领域保持着最前沿。