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CLUSTER MATTER FORMATION IN CLUSTER COLLISIONS

The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China

Beijing Radiation Center, Beijing 100875, China

College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China

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F. S. ZHANG

The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China

Beijing Radiation Center, Beijing 100875, China

Corresponding author.

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X. H. ZENG

College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China

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F. WANG

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

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S. F. ZHANG

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

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, and

Y. P. ZHANG

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

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https://doi.org/10.1142/S0217979205031158Cited by:0 (Source: Crossref)

Abstract

By using the tight-binding molecular dynamics simulations in cluster collisions, we give some evidences of the structures of (Na₉)₂ cluster dimer and (Na₄)₄ cluster tetramer from the dynamical point of view. We show that the (Na₉)₂ and (Na₄)₄ cluster matter may exist as intermediate states and finally decay to compact structure in real collision process. With a technique called "sharp cooling", the stable cluster structures (Na₉)₂ and (Na₄)₄ are brought into being to end. The eigen-mode frequencies of these clusters are obtained with Fourier transform of the velocity auto-correlation function which can characterize their structure properties.

We thank the Natural Science Foundation of China (grant No. 10435020) and the Science Foundation of the Ministry of Education for financial support.

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Vol. 19, No. 15n17

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Received 4 September 2004

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CLUSTER MATTER FORMATION IN CLUSTER COLLISIONS

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