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arXiv physics/0008235physics.atm-clus
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(CsCl)nCs +团簇离子中CsCl体结构的出现

Emergence of Bulk CsCl Structure in (CsCl)nCs+ Cluster Ions

Andres Aguado

摘要:

用量子力学/半经验混合理论方法研究了(CsCl)nCs+团簇离子中CsCl体结构的出现.我们发现,菱形十二面体碎片(体CsCl对称性)是更稳定的比岩盐碎片完成后,第五菱形十二面体原子壳。从这个大小(n=184)开始,一组新的幻数应该出现在实验质谱中。我们还提出了另一个实验测试这种转变,其中明确涉及的电子结构的集群。最后,我们进行了更详细的计算,在尺寸范围n=31- 33,最近的实验研究发现的菱形十二面体(CsCl)32 Cs+异构体的存在下,在集群光束的迹象。

英文摘要:

The emergence of CsCl bulk structure in (CsCl)nCs+ cluster ions is investigated using a mixed quantum-mechanical/semiempirical theoretical approach. We find that rhombic dodecahedral fragments (with bulk CsCl symmetry) are more stable than rock-salt fragments after the completion of the fifth rhombic dodecahedral atomic shell. From this size (n=184) on, a new set of magic numbers should appear in the experimental mass spectra. We also propose another experimental test for this transition, which explicitely involves the electronic structure of the cluster. Finally, we perform more detailed calculations in the size range n=31--33, where recent experimental investigations have found indications of the presence of rhombic dodecahedral (CsCl)32Cs+ isomers in the cluster beams.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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