高电荷态离子~(129)Xe~(28+)与Au和Mo���面作用产生的X射线谱

研究了高电荷态离子129Xe28+轰击金属Au和Mo���面产生的特征X射线谱。实验结果表明,在入射离子的电荷态和能量相同的条件下,对于核电荷数较小、原子质量较轻的靶原子,只有其内壳层的电子才能被激发而产生X射线,而核电荷数较大、原子质量较重的靶原子只有其较外壳层的电子能被激发而产生X射线。特征X射线的产额随入射离子动能的增加而增加。

高电荷态离子Ar~(13+)轰击Mo���属表面形成靶原子X射线谱测量

本工作实验研究低能高电荷态Ar13+离子与金属Mo���面作用过程中Mo���子受激发射X射线和X射线强度随入射能量的变化。实验结果表明,低速高电荷离子与金属表面原子相互作用可有效地激发靶原子或靶离子内壳层电子而发射X射线。

Ar的类氦和类锂离子与Mo���面相互作用过程中的x射线发射

在兰州重离子加速器国家实验室电子回旋共振离子源上用Si(Li)探测器观测到了不同动能的Ar15+和Ar16+离子与Mo���面相互作用过程产生的x射线.在不同动能的Ar16+与Mo���面作用过程中不仅能观测到Ar的K层x射线而且能观测到Mo���L层x射线.在不同动能的Ar15+入射下只能观测到Mo���L层x射线.实验结果表明,Ar的K层x射线的产额与入射离子的动能、作用过程中形成的空心原子携带的势能以及入射离子和靶原子x射线的竞争等有关,Mo���L层x射线随入射离子动能的增加而增加.

高电荷态离子Ar~(17+)与Mo���面作用过程中的X射线发射

观测了低速 (小于Bohr速度 )高电荷Ar17+离子与金属Mo���面相互作用的X射线发射 ,以及ArKα ,KβX射线强度随入射离子动能的变化 .

~(94)Mo���自旋态能级纲图(英文)

通过重离子融合蒸发反应16 O(82 Se +4n) 94 Mo���局了94 Mo���的高自旋态 .利用多探头探测器阵列GASP进行了在束γ测量 ,从而重新研究了94 Mo���的高自旋态能级结构 .基于新发现的一些重要的连接跃迁 ,对94 Mo���的高自旋态能级纲图做了重要修改 .将新的能级结构与壳模型计算进行了比较和讨论 .结果表明要正确的描述94 Mo���的高自旋态 (自旋值大于 14 )能级结构 ,应考虑价中子在d5/ 2 ,g7/ 2 和h11/ 2 轨道上的激发 .

High-spin level structure in Mo-94,Mo-95

High-spin level structures of 94,95Mo have been reinvestigated via the 16O(82Se, xnγ)94,95Mo(x = 4, 3) reactions at E(82Se) = 460 MeV. The previously reported level schemes of these two nuclei have been largely modified up to ∼11 MeV in excitation energy due to identifications of some important linking transitions. Shellmodel calculations have been made in the model space of π(p1/2, g9/2, d5/2)4 and ν(d5/2, s1/2, d3/2, g7/2, h11/2)2(3) and compared with the modified level schemes. The structures of the newly assigned high-spin states in 94,95Mo have been discussed.

L-shell x-ray yields and production cross sections of Zr and Mo bombarded by slow highly charged Ar16+ ions

The L-shell x-ray yields of Zr and Mo bombarded by slow Ar16+ ions are measured. The energy of the Ar16+ ions ranges from about 150keV to 350keV. The L-shell x-ray production cross sections of Zr and Mo are extracted from these yields data. The explanation of these experimental results is in the framework of the adiabatic directionization and the binding energy modified BEA approximation. We consider, in the slow asymmetric collisions such as Ar and Mo/Zr, the transient united atoms (UA) are formed during the ion-surface interaction and the direct-ionization is the main mechanism for the inner-shell vacancy production. Generally, the theoretical results are in good agreement with the experimental data.