Nuclear structure at high angular momentum
Nuclear structure at high angular momentum
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高角动量下的核结构
DOI：
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发表时间：
1980
期刊：
影响因子：
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通讯作者：
F. Stephens
中科院分区：
文献类型：
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作者：
F. Stephens
这篇综述文章首先讨论了试图让原子核保持非常高的角动量所面临的限制。描述了目前用于产生具有最大角动量的原子核的方法。然后介绍了高自旋态的物理，描述了纯集体经典转子的一些性质，并考虑了耦合单粒子运动对此的影响。接下来，我们讨论了后弯，它的原因，以及一种新的谱带和高自旋值下的后弯。当核角动量由几个高j粒子携带并沿对称轴排列时，就会出现非集体态。这导致了一条不规则的Yrast线，沿着这条线没有集体的过渡。研究了铅区、锂区和N=82区的非集体行为。然后，讨论转移到集体行为和最近对连续谱的研究。给出了旋转的证据，并计算了这种旋转的有效转动惯量。最后介绍了目前的…伽马射线能量关联研究。参考文献68篇，附图36幅。(RWR)
This review paper begins by discussing the limits faced in the attempts to get nuclei to hold very high angular momentum. The method presently used to produce nuclei with the maximum angular momentum is described. Then the physics of high-spin states is taken up; some properties of a purely collective, classical rotor are described, and the effects of coupling single-particle motion to this are considered. Next, backbending, its causes, and a new spectroscopy of bands and backbends at high spin values are discussed. Noncollective states occur when the nuclear angular momentum is carried by a few high-j particles and is aligned along a symmetry axis. There results an irregular yrast line, along which there are no collective transitions. Noncollective behavior in the lead region, the hafnium region, and the N = 82 region is examined. Then the discussion moves on to collective behavior and recent studies on continuum spectra. Evidence for rotation is given, and effective moments of inertia for this rotation are evaluated. Finally, current ..gamma..-ray energy correlation studies are described. 68 references, 36 figures. (RWR)