Exotic atomic nuclei on the verge of nuclear stability

这项赠款提案的主要方向是将处于核稳定极限和中子与质子比极端的奇异核填充到核图中所谓的“隐形地”区域。这些原子核是在地球上的实验室中产生的，概率非常低，有时也会参与恒星中发生的核天体物理过程，并帮助科学家阐明宇宙中元素的起源。直到最近，这些研究都是利用稳定的束流进行的，尽管使用这种束流可以发现很多东西，但现在的焦点是放射性离子束，它定义了北美和世界范围内核研究的未来前景。国际原子能机构第一和第二号设施的TRIUMF利用先进和高效的探测器系统，开展了一项广泛的研究计划，将探索核结构如何在稳定的极限下演化，以及恒星中的元素生产。

The main direction of this grant proposal is to populate exotic nuclei situated at the very limit of nuclear stability and at the extremes of neutron-to-proton ratios, into the so-called "Terra Incognita" region of the nuclear chart. These nuclei, which are produced in laboratories on Earth with very low probabilities, are sometimes also involved in nuclear astrophysics processes which take place in stars, and help the scientists to elucidate the origin of the elements in the Universe.Until recently such studies were carried out by using stable beams, and although there is much to be discovered using such beams, the focus is now on radioactive ion beams which define the future perspectives of nuclear studies far from stability in North America and worldwide.An extensive research programme at TRIUMF at the ISAC I and II facilities using sophisticated and highly efficient detector systems will explore how the nuclear structure envolves at the limits of stability and the element productions in stars.