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本文评述了原子核结构研究的新进展和面临的新挑战.指出当今原子核结构发展方向的基本特点是“极端条件下的核结构”,它的主要内容是高自旋态物理和远离稳定线直至滴线原子核两个方面.而这些新发展方向,有新一代超级γ谱探测器系统和放射性核束加速器的发展和建造做为坚实的技术保证. This paper reviews the new developments and new challenges for the nuclear structure studies. It points out that the developments of the nuclear structure today is characterized by the term u Nuclear Structure in Exotic Conditions",the main contents of which are the high spin physics and physics for the nuclei far from the stability line and up to drip lines.All these new developments are solidly ensured by the developments and the constructions of super γ- ray spe ctrometer... 相似文献
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对关联是原子核中最重要的剩余相互作用.阐述了用多体关联方法研究原子核中对关联效应的可能性,并以中子晕核11Li、11Be为例,阐述了此方法的可行性. The pairing correlation is the most important residual interactions in nucleus system. The possibility for the investigation of pairing correlation with the many-body correlation approach and the feasibility of the approach, by taking the halo nuclei 11Li and 11Be as an example are elucidated. 相似文献
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综述了近年来我国在远离稳定线原子核实验研究中取得的重要进展.这些实验研究工作主要是在中国科学院近代物理研究所(IMP)、中国原子能科学研究院(CIAE)和中国科学院上海原子核研究所(SINR)进行的.文章还简要介绍了IMP和CIAE现有加速器上研制的放射性束流线及进一步的发展计划. 相似文献
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对近年来清华大学现代应用物理系开展的原子核结构实验研究的情况作了介绍,着重对所研究过的核高自旋态(包括个别核的低自旋态)结构特性进行了简述.The experimental research on nuclear structure in Department of Modern Applied Physics, Tsinghua University has been summarized. The main research results in high spin states of nuclear structure, as well as some low spin states, have been reported. 相似文献
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本文综述了中国原子能科学研究院HI-13串列加速器上的核结构研究.在原于核高自旋态方面.简要地介绍了稀土区奇质子核带交叉反常现象研究,质量数为A=90和A=130核区的高自旋态研究、原子核高自旋能级寿命研究和三轴形变研究.在原于核巨共振方面介绍了矮共振区的GDR研究,形变核的GDR以及高温转动核的GDR研究. The nuclear structure studies carried out at the HI-13 tandem in China Institute of Atomic Energy are reviewed. Brief introductions in the field of high spin state physics are given, such as the anomolous band crossing for odd-proton rare earth nuclei, high spin state studies in the mass 90 and 130 regions, nuclear high spin state life time study and the investigation of the triaxial de formation. Brief introductions in the field of GDR studies of pygmy resonance and GDR studies in deformed... 相似文献
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远离β稳定线奇异核性质的理论研究 总被引:1,自引:0,他引:1
回顾了对远离β稳定线奇特核性质的理论研究现状,并用相对论平均场理论研究了远离β稳定线奇特核的性质.包括轻核的中子晕和质子晕、远离β稳定线核的壳效应和超重核的性质等.The present situation of studies on exotic nuclei far from the β stable line is simply reviewed and then the relativistic mean field study on these nuclei has been carried out. This includes studies on neutron halos and proton halos in light nuclei, on nuclear shell effects of nuclei far from the stability, and on the properties of superheavy nuclei. 相似文献
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用推广的汤马斯-费米近似和Skyrme势研究了原子核的高自旋态,应用推转模型给出了含转动的能量密度公式,并计算了116Sn,158Yb和240Pu这三个典型核在不同角动量下的核形变与转动能.计算结果定性地与液滴模型相似,在数值上则有一定差别.计算结果表明,对转动能的量子修正,即使不考虑壳修正,也不能忽略. 相似文献
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对9≤A≤14,3≤Z≤5的核进行了壳模型计算.以8He作为core,选用修正的表面δ相互作用(MSDI)作为残余相互作用,挑选了24个实验能谱数据,定出了MSDI的参数和单粒子能量,并计算了结合能、低激发谱、电磁性质等,得到与实验较符合的结果.并着重讨论了11Be的宇称反转和halo结构的物理机理.计算程序为OXBASH. 相似文献
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High-spin states of ^160Tm are studied by the ^146 Nd(^19F, 5n) reaction at a beam energy of 102 MeV. The previously known πh11/2 + vi13/2 yrast band and πh11/2 + vh9/2 side band are confirmed. The level scheme is enriched and more low-lying levels are observed. A new side band is observed and assigned as the favoured signature partner of πd3/2 + vi13/2. The spin of this band is assigned with the energy level systematics. It is pointed out that the B (M1)/B (E2) ratios increase rapidly at the high frequency approaching the second crossing in the π h11/2 + vi13/2 braid, which is closely related to the alignment gain of the aligned i13/2 quasineutron. 相似文献
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朱胜江 J.H.Hamilton A.V.Ramayya L.Chaturvedi J.Kormicki X.W.Zhao I.Y.Lee N.R.Johnson C.Backtach F.K.Mcgowan M.L.Halbert J.D.Cole 《中国物理 C》1992,16(6):539-545
用在束γ谱实验技术,对68Ge、65Ga与67Ga的高自旋态进行了研究.所用核反应为46Ti(25Mg,xpxn),束流能量为68MeV.在68Ge中,观测到新的8+以上的多带结构、带间的交叉跃迁及一个新的可能具有大形变的带.新的微观模型(EXCITED FED VAMPIR)的计算结果与实验数据比较得到满意的符合.在65Ga与67Ga中,给出了这两种核的新的能级图,观测到集体性很强的带结构. 相似文献