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首页> 外文期刊>The European Physical Journal, A. Hadrons and Nuclei >Covalently bound molecular structures in the α + ~(16)O system
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Covalently bound molecular structures in the α + ~(16)O system

机译:α+〜(16)O系统中的共价键分子结构

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Using the concept of covalent molecular orbitals for neutrons and the known properties of the local α + ~(16)O potential the formation of asymmetric molecular structures in neon isotopes is discussed. Experimental evidence for parity doublets in (21)Ne is reviewed and a corresponding band structure for the states in ~(21)Ne at moderate excitation energy of E_x = 0-8 MeV is proposed. The structure of some bands can be interpreted as consisting of an instrinsic asymmetric (~4He + ~(16)O) structure bound by a covalent neutron in σ and π orbitals. An extension of the observed structures to symmetric molecular structures in isotopes of Mg and heavier nuclei is suggested. In particular shape isomers in isotopes of magnesium, namely (He)_2O molecules, can be predicted and an extended Ikeda diagram is proposed.
机译:利用中子的共价分子轨道的概念和局部α+〜(16)O势的已知性质,讨论了氖同位素中不对称分子结构的形成。审查了(21)Ne中奇偶双峰的实验证据,并提出了在中等激发能量E_x = 0-8 MeV时〜(21)Ne中的态的相应能带结构。某些能带的结构可以解释为由σ和π轨道中的共价中子束缚的内在不对称(〜4He +〜(16)O)结构组成。建议将观察到的结构扩展为Mg和较重核的同位素中的对称分子结构。特别地,可以预测镁同位素中的形状异构体,即(He)_2O分子,并提出了扩展的池田图。

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