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143Pm高自旋态研究
Investigation of High-Spin States in143 Pm
【摘要】 通过熔合蒸发反应12 8Te( 19F ,4nγ)布居了143Pm的高自旋态 ,利用在束γ谱学方法 ,对143Pm的高自旋态核结构进行了研究 .测量了γ射线单谱和γ -γ符合谱 ,并进行了γ射线各向异性以及DCO比率分析 ,建立了激发能高达1 0 53 5 4keV的能级纲图 ,其中包括新发现的 3 2条γ射线和 1 7个新能级 .用弱耦合模型对143Pm的晕态能级结构进行了解释
【Abstract】 High spin states in 143 Pm have been investigated via the 128 Te( 19 F,4nγ) 143 Pm reaction using techniques of in beam γ spectroscopy. γ ray singles,γ γ coincidences, γ ray anisotropies and DCO ratios have been measured. Based on these measurements, the level scheme of 143 Pm has been extended up to excitation energy of 10535.4keV including 32 new γ rays deexciting of 17 new levels. The yrast levels in 143 Pm can be understood qualitatively in the framework of a weak coupling model.
【Key words】 anisotropy; DCO ratio; level scheme; weak coupling model;
- 【文献出处】 高能物理与核物理 ,High Energh Physics and Nuclear Physics , 编辑部邮箱 ,2001年09期
- 【分类号】O571.2
- 【被引频次】1
- 【下载频次】20