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处理原子-辐射场相互作用系统的变分方法 被引量:1
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作者 韩蕊萍 朱小芹 边秋平 《光子学报》 EI CAS CSCD 北大核心 2002年第2期141-145,共5页
用 Heisenberg-Weyl(简 H-W)群直积 SU( 2 )群上的相干态表述了原子 -辐射场相互作用系统的非平衡态统计力学 .引入一个新定义的含时分布函数 ,将非平衡态下密度矩阵所满足的 von Neumann方程转化成可分离变量的偏微分方程 ,给出了方程... 用 Heisenberg-Weyl(简 H-W)群直积 SU( 2 )群上的相干态表述了原子 -辐射场相互作用系统的非平衡态统计力学 .引入一个新定义的含时分布函数 ,将非平衡态下密度矩阵所满足的 von Neumann方程转化成可分离变量的偏微分方程 ,给出了方程的形式解 ,算符的平均值表示 .本文还就便于作微扰展开的相互作用绘景作了讨论 . 展开更多
关键词 vonNeumann方程 相干态 偏微方程 单模辐射场 量子统计分学 原子-辐射场相互作用系统
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Statistical Law of High-Energy Fullerene and Its Derivatives Passing Through Graphene
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作者 徐志成 温家乐 +1 位作者 钟伟荣 魏亮 《Communications in Theoretical Physics》 SCIE CAS CSCD 2016年第3期361-365,共5页
The behavior of graphene bombarded by fullerene(C60 and C70)and its derivatives through using nonequilibrium molecular dynamics method are studied.The microscopic mechanism of passing through graphene is obviously rel... The behavior of graphene bombarded by fullerene(C60 and C70)and its derivatives through using nonequilibrium molecular dynamics method are studied.The microscopic mechanism of passing through graphene is obviously related to the initial structure of destroying carbon-carbon bonds and the strong interaction between the circular region of graphene and the cluster.The probability of passing through graphene depends on the incident velocity of clusters,the species of clusters,the temperature of heat baths,and the defect of graphene.Our results can provide a perspective for further understanding the mechanism of generating nanopores in graphene.The clusters used here may also bring about some potential utilities in tie functionalization of graphene and the production of nanopores. 展开更多
关键词 NANOPORE graphene FULLERENE BOMBARDMENT molecular dynamics simulation
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