Review of isomer properties

同分异构体是原子核的长寿命激发态，其半衰期可达多年。它们是由于旋转和形状的不寻常组合而产生的。特别是自旋异构体，依赖于原子核中单个质子和中子的行为，它们提供了基本的核结构信息。较长的半衰期使人们能够精确测量，例如，激发态的形状和大小，为理论计算提供敏感的测试。从历史上看，同分异构体在球形和非球形核的理论发展中已经并将继续发挥关键作用。今天，英国核物理学的一个重点是探索和理解核结合的极限（在所谓的“滴线”和“超重”元素）。在这种情况下，自旋异构体具有特殊的重要性，因为它们可以为最奇特的、寿命最短的原子核提供额外的稳定性。这一认识强调了理解同分异构体性质的必要性，特别是它们的半衰期。G.D. Dracoulis教授（来自堪培拉的澳大利亚国立大学）的访问将通过网络和讲座刺激英国的同分异构体物理学，重点是与pm . william教授合作准备一篇同分异构体综述文章沃克（萨里大学吉尔福德分校）。

Isomers are long-lived excited states of atomic nuclei, with half-lives ranging up to many years. They arise due to unusual combinations of spin and shape. Spin isomers, in particular, are dependent on the behaviour of individual protons and neutrons in the nucleus, and they give basic nuclear structure information. The long half-lives enable accurate measurements of, for example, the shapes and sizes of excited nuclear states, providing sensitive tests of theoretical calculations. Historically, isomers have played, and continue to play, a key role in theoretical developments, for both spherical and non-spherical nuclei. A priority of UK nuclear physics today is the exploration and understanding of the limits to nuclear binding (at the so-called 'drip-lines' and for 'superheavy' elements). In this context, spin isomers have special importance, since they can provide extra stability for the most exotic, short-lived nuclei. This realization gives strong emphasis to the need to understand isomer properties, especially their half-lives. The visit of Professor G.D. Dracoulis (from the Australian National University, Canberra) will stimulate isomer physics in the UK through networking and giving talks, with a focus on the preparation of an isomer review article in collaboration with Professor P.M. Walker (at the University of Surrey, Guildford).